An instructor has graded 23 exam papers submitted by students in a class of 24 students, and the average so far is 69. How high would the score on the last pa have to be to raise the class average by 1 point? By 2 points?

Q: Ann is eighteen years older than her son. One year ago, she was three timesas old as her son. How…

A: Let the age of her son is =x So the age of Ann is =x+18

Q: Ghana currently have 294 followers on Tiktok : i. If her followers increased 5% every day. How many…

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Q: Wendy has taken two tests with scores of 77 and 80. To get an 82 average, what must her grade be on…

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Q: Christine is 41 years old and her daughter is 9. In how many years will Christine will be there…

A: Given data: Christine is 41 years old and her daughter is 9. To find: In how many years will…

Q: Jasmine is 8 years younger than twice her sister's age. If Jasmine's sister is 22 years old. Then,…

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Q: A snail is at the bottom of 10-meter well. Each day it crawls up 3 meters, but at night, it slips…

A: The snail crawls up 3 meters at day, but slips down 2 meters at night. So gradually, everyday it is…

Q: stephanie is twenty-four. She is twice as old as martha was when stephanie was as old as martha. How…

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Q: If a fan does not catch the T-shirt, after how many seconds will the T-shirt hit the ground?

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Q: If 28 less than five times a certain number is 232. What is the number?

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Q: It takes an ant farm 3 days to consume of an apple. At that rate, in how many days will the ant farm…

A: An ant farm takes 3 days to consume ½ of an apple. → An ant farm consume ½ of an apple in 3 days

Q: There are 80 questions on a college entrance examination. Two points are awarded for each correct…

A: Given that, there is a total of 80 questions. Let the number of correct answers be c. Then, the…

Q: In a class of 24 students, 23 exams are graded. The average for the class was 85. What would the…

A: Given, Class contain 24 in which 23 have already graded. The average of these 23 students was 85.

Q: Cambridge Slim are 38 sausages in the first 23 minutes of a high stakes eating conest. Assuming that…

A: The ratio of 2 numbers is one number divided by the other number. For the ratio to be consistent,…

Q: What is the sum of consecutive whole numbers that begin with 1, increase to 200, and then decrease…

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Q: From your hotel room, you look down at the street and want to estimate how many taxis are available.…

A: Unbiased estimator is an important concept in estimation.

Q: .Carmi is ranked 13th from right and 8th from left. How many students are there in total?

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Q: • A body having a temperature of 100°C was placed in a room where the temperature is 5°C. At the end…

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Q: An instructor has graded 20 exam papers submitted by students in a class of 21 students, and the…

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Q: An instructor has graded 25 exam papers submitted by students in a class of 26 students, and the…

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Q: A collection of dimes and quaters is worth S15.25. There are 103 coins in all. How many of each is…

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Q: . Determine if the girls' average score in an exam is higher than 600. Th

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Q: A student took all 8 tests in the first semester and had an average score of 82. Then the teacher…

A: The average is defined as the mid-value of an assumed data set. For observations, (n-number of…

Q: A sum of Rs. 2236 is divided among A,B and C such that A receives 25 % more than C and C receives 25…

A: Introduction :

Q: An instructor has graded 23 exam papers submitted by students in a class of 24 students, and the…

A: Given An instructor has graded 23 exam papers submitted by students in a class of 24 students, and…

Q: uppose that the exam score for Class A is 80% and for Class B is 54%. When all the scores for both…

A: Let us assumed that percentage of the students in class A be "x"  Then the percentage of the…

Q: 4. A job is 333 % completed in 15 minutes. At this rate, how many minutes will it take to complete…

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Q: One pair of jeans is advertised at 10% off the regular price. At another store, the same pair of…

A: GivenA pair of jeans is advertised in Store 1 at discount of 10%Same pair of jeans is advertised at…

Q: The average score of 15 atudents in a class is 65%. Ama joins the class and the average scores of…

A: Let x1 be the average score of 15 students and x2 be the average score of Ama.  The average score…

Q: In a film, the actor Charles Coburn plays an elderly “uncle”character criticized for marrying a…

A: Given that In a film, the actor Charles Coburn plays an elderly “uncle” character criticized for…

Q: An instructor has graded 23 exam papers submitted by students in a class of 24 students, and the…

A: Given An instructor has graded 23 exam papers submitted by students in a class of 24 students, and…

Q: John needs eight or more tubes to flash for a special effect. If John wants to be 99% confident that…

A: Given information: P(Successful ignition) = 0.88 (Parent question) x = 8 P(x > 8) = 0.99

Q: It takes you 32 seconds to walk from the first (ground) floor of a building to the third floor. How…

A: Time taken to walk from First floor to third floor = 32 seconds Time taken to walk from First floor…

Q: In order to pass a class, you need an average of 90 on 7 exams. If your test scores were 98, 86, 90,…

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Q: Which amount of time is greater for the average person, the total time spent on his/her cell phone…

A: Total amount spent of his/her cellphone is greater.

Q: On three examinations, Elena received scores of 82, 91, and 76. What score does Elena need on the…

A: let Elena needs score X for her average score 85 we know that the average value formula average…

Q: A student missed 15 problems on a mathematics test and received a grade of 70 %. If all the problems…

A: All the problems were of equal value;student missed 15 problemes and received 70% grade.That means…

Q: Suppose there is a 2​-degree drop in temperature for every thousand feet that an airplane climbs…

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Q: A particular extension cord can support up to 8 amps. SeSe has an iron whose label started 1,200…

A: Given that Power P = 1200 W and Voltage V = 120 V

Q: Two cars are driven at a constant speed on a test circuit. One makes a complete circuit in 84…

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Q: A man is three times as old as his son five years ago; he was five times as old as his son was at…

A:

Q: An instructor has graded 20 exam papers submitted by students in a class of 21 students, and the…

A:

Q: A salesperson receives a weekly salary of ​$400. In​ addition, ​$15 is paid for every item sold in…

A: For sale of 219 items, the salesperson will receive $15 extra for each of (219-200=19) items.

Q: If a person is dealt 13 cards from an ordinary deck of 52 playing cards several times, how many…

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Q: The ratio of men to women working for a company is 8 to 5. there are 75 women working for the…

A:

Q: A company pays $20 per hour for up to 5 hours of work, and $30 per hour for overtime hours (hours…

A: Given x is the total hours worked. And beyond 5 hours it will be overtime hours.

Q: Two cars travel toward each other from cities that are 427 miles apart at rates of 64 mph and 58…

A:

Q: The final scores of a group of 40 Engineering students in a school has 96 as the highest and 52 as…

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Q: The average grade Mark received on 4 tests was 94. If he drops his lowest grade of 85, what wil his…

A: We have to find

Q: To raise money, a school is sponsoring a magazine subscription drive. By visiting 90 homes in the…

A: Money raised by selling magazine subscription in 90 homes is $375.