9. In 8 years, a girl will be three times as old as she was 4 years ago, Find her present age.

Q: 2) % is how many times larger than ¾6?

A: Since you have asked multiple question, we will solve the first question for you. If youwant any…

Q: Suppose we want to throw a coin 10 times, predict how many times an image will appear and how many…

A: when flipping a coin one time, there is 50 percent probability of getting image and 50 percent…

Q: How many minutes are there in 5 days?

A: Given :                  How many minutes are there in a 5 days.

Q: will exceed the number of years watching TV by 20. Over the​ lifetime, how many years will the…

A: According to​ statistics, a person will devote 36 years to sleeping and watching TV.The number of…

Q: A person is 4 years old and his sister is half his age, so if this person is a hundred years old,…

A: Given: Age of the person = 4 years Age of the sister = 2 years (half of that of person's age)…

Q: 3. A box contains 60 yellow marbles, 110 blue marbles and 90 green marbles. If you pick one marble…

A:

Q: Suppose that $50,000 from a retirement account is invested in a large cap stock fund. After 30yr,…

A: Given the invested amount as $50,000. The time period as 30 years and the total accumulated amount…

Q: Suppose $67,050 is divided into two bank accounts. One account pays 6% simple interest per year and…

A:

Q: 7. If an investor invests $23,000 into two bonds, one that pays 4% in simple interest, and the other…

A: As per our guideline we are supposed to be answer only one question you can repost other question in…

Q: 1. If there are 87000 doctors for a population of 34000000, what is the number of doctors per…

A: Given that total population, N= 34000000 Total number of doctors = 87000

Q: A particular antibiotic is introduced to a petri dish containing 1000 newly discovered flesh -…

A: Let N0  be initial and Nt after t hours Then Nt = N0 (1 - 1/3)t.               Nt = N0…

Q: 5. Right now your countertop has 1 e-coli cell. In the right environment, e-coli can double every 13…

A: Here, it is given that the right environment, e-coil can double every 13 minutes.

Q: A strain of bacteria growing on your desktop doubles every 5 minutes. Assuming that you start with 5…

A:

Q: If it is now 10:45 am, what time will it be in 143,999,999,995 minutes from now?

A:

Q: The number of cells in a tumor doubles every 4.5 months. If the tumor begins with a single​ cell,…

A:

Q: The number of 3-digit numbers less than 400 that can be created if the last digit is either 4 or 5…

A: Solution  :

Q: A job can be done in as many days as there are men in the group. If the number of men is reduced by…

A:

Q: A certain number is doubled and then divided by 8. If after subtracting 4 from this result, one gets…

A: The statements involving algebraic operations and expression namely addition , subtraction ,…

Q: How many digits should be removed from a 1000-digit number 2008... 2008 such that the sum of…

A:

Q: 2. If there are 0.0004 cars per capita for a population of 220 000, how many cars are there? *

A: Given Data: Cars Per capita=0.0004 Population=220000

Q: Suppose that 9 people lost an average of 13.3 pounds over the course of the first month of being on…

A: 9 people lost 13.3 pounds on an average. Let w1,w2,...,w9 be the weight loss of the 9 people. Then…

Q: Suppose that a particular TV depreciates 40% in value each year and has an original cost of $650. In…

A:

Q: 4. Aaron is 5 years younger than Ron. Four years later, Ron will be twice as old as Aaron. Find…

A:

Q: (a) Find the replacement time (in years) that separates the top 30 % from the bottom 70 % . (b) If…

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Q: 1 2 3 4

A:

Q: A manufacturer producing a new product estimates the annual sales to be 9600 units. Each year, 8% of…

A: According to data, After 1 year 9600 units will be in use. Each year, 8% of the units that have…

Q: A team of 24 workers was on a job that will finished in 70 days. 10 more workers were hired on the…

A: Given that a team of 24 workers will finish a job in 70 days. so 1 worker in 1 day will finish…

Q: Suppose that a certain radioactive substance has a halflife of 22 years. If there are presently 6855…

A:

Q: 4. A car costs Php 800,000. Find its value after 4 years if it depreciates 20% of its cost per year.

A:

Q: Suppose that 6 machines can complete a certain task in 9 days. If there are 18 machines, how many…

A: Concept: If number of machine increase then number of work completion day will decrease . Hence Both…

Q: The average age of a preschool class is 4.5 years old. If there is one 3-year-old, five 5-year-olds,…

A:

Q: A new iPhone came out and the manufacturer plans to sell 10,000 pre-ordered in week zero and expects…

A: Numbers of iPhone plan to sell in week zero=10,000 increment in each week =7%

Q: A pet dog is now 1 year and 4 months old. how many months old is it now?

A: Given,           A pet dog is now 1 year and 4 months old.

Q: If the U.S. Economy grew by 4% for three consecutive years, the economy would have grown by 12% over…

A: Given the U.S. Economy grew by 4% for three consecutive years the economy would have grown by 12%…

Q: suppose your $1200 laptop depreciates 1% per week.  After what week will your computer first become…

A:

Q: Five years ago, Al is 6 years younger than Je who is at that time 2 years more than twice as old as…

A: Let the age of Al before 5 years be a   Let the age before 5 years of Je be,  bThen, b=a+6or,…

Q: Suppose that an outbreak of cholera follows severe flooding in an isolated town of 3198 people.…

A: Given that: Total number of people = 3198 Initially (Day 0), 62 people are infected. Every day…

Q: 26. If 30 assemblers can complete a certain job in 9 hours, how long will the same job take if the…

A:

Q: Suppose only 10 people knows about arumor and the number of those who would know doubles every day.…

A: Only 10 people know about the rumour initially, and who would know doubles every day. We need to…

Q: Suppose a culture of 500 bacteria is placed in a dish and the culture doubled every hour, how many…

A:

Q: Imagine a Filipino family with seven members. The grandfather is 4 years older than the grandmother,…

A: Given a Filipino family has 7 members.  Grand father, Grand mother, Two sons, One daughter, One wife…

Q: There are 286.9 million drivers in the U.S. who drive a cumulative 3.2 trillion miles every year.…

A: From the given information we find the solution.

Q: Last year, 150 cases were reported of a new infectious disease. It has been predicted that the…

A:

Q: is divided into two bank accounts. One account pays 1% simple interest per year and the other pays…

A: Total amount invested into two banks = $1000 let amount invested One account pays 1% simple interest…

Q: The half-life of a radioactive isotope is the time it takes for a quantity of the isotope to be…

A:

Q: Suppose that you have 5000$ in your bank account and each month you withdraw 14% of the money left…

A: I withdraw 14% of the money every month.  So at the end of every month, there is (1-0.14)=0.86 of…

Q: It was reported in 2007 that there were 7,460,000 people age 16 or older who had a​ "go outside…

A: Given that, it was reported in 2007 that there were 7460000 people age 16 or older who had a​ "go…

Q: 1. Suppose antique clock is expected to be worth $350 after 3 years and $530  after 5 years. What…

A: