A mother is now 4 times as old as her daughter. In 4 years, the mother will be six times as old as the daughter was, two years ago. How old is the daughter 2 years from now? 8 yrs old 6 yrs old 12 yrs old 10 yrs old

Q: Valir 1 is twice as old as Valir 2, 8 years from now, the sum of their ages will be 42. How old are…

A: Valir 1 is twice as old as Valir 2, 8 years from now, the sum of their ages will be 42. How old are…

Q: If $5000 is invested at 6% annual simple interest, how long does it take to be worth $7100

A: Given:      Rate of interest = 6%      Principle  = $5000     simple interest S.I = $7100     Time…

Q: Assume a substance has a half-life of 10 years and the initial amount is 131 grams. How much remains…

A:

Q: Five years hence, father's age will be three times the age of his son Five years ago,father was…

A: let  father's age= x son's age = y

Q: A population of mice doubles every 6 months. If it started with 4 mice, how many will there be after…

A:

Q: According to statistics, a person will devote 37 years to sleeping and watching TV. The number of…

A: Number of years devote by the person in sleeping and watching TV is 37. The number of years sleeping…

Q: A city's population is currently 29,000 and is growing by 3.9% each year. If this continues, in how…

A:

Q: May is 5 years older than June. 7 years ago, May was two times as old as June. Find their present…

A: To convert the given word problem into equations and find the unknown ages

Q: A city has been found to have a population that triplesevery four years. If the city’s population is…

A:

Q: A pewter bowl is 8 years old, and a silver bowl is 22 years old. In how many years will the silver…

A: Let after x years the silver bowl will be twice the age of the pewter bowl. After x years the age of…

Q: A silver coin is 28 years older than a bronze coin. In 6 years, the silver coinwill be twice as old…

A: Let the present age of the bronze coin is = x years  So the age of the silver coin is = (x+28) years…

Q: A particular car is said to depreciate 15% each year. If the car new was valued at $20,000, what…

A:

Q: According to statistics, a person will devote 30 years to sleeping and watching TV. The number of…

A: Let x=the number of years of sleeping y=the number of years of watching TV   According to the…

Q: According to statistics, a person will devote 34 years to sleeping and watching TV. The number of…

A: Given,  A person will devote 34 years to sleeping and watching TV.  The number of years sleeping…

Q: San is 108 year old. Jon is 24 years old. How many years will it take for San to be exactly 4 times…

A: Let x years be needed for San to be exactly 4 times as old as Jon.

Q: If the population of a small city is 35,000. If the immigration laws allow population to grow by…

A:

Q: If 10% of a radioactive substance decays after 33 years. How much will remain after 200 years?

A: Let in starting the radioactive substance = No And after t time it becomes N

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

A:

Q: An additional radio satellite dish is being added to an array of dishes. This newly added dish is 2…

A: Age of old dish = x+2 Age of new dish = x

Q: If sandago has a present population of 70000 and the population increase by 3% each year. What will…

A:

Q: A culture of bacteria doubles every hour. If there are 500 bacteria at the beginning, how many…

A:

Q: The product of john age (in years) for 5 years age with his age (in years) 9 years later is 15 .Find…

A: The product of john age (in years) for 5 years age with his age (in years) 9 years later is 15

Q: The present age of Jacob’s father is three times that of Jacob. After 5 years, sum of their ages…

A: Given The present age of Jacob’s father is three times that of Jacob. After 5 years, sum of their…

Q: If 12g of a radioactive substance are present initially and 9yr later only 6g​ remain, how much of…

A: As half the amount of the radioactive substance left after 9 years, thus it is clear that half-life…

Q: In four years time a mother will be three times as old as her son. Four years ago she was five times…

A: Let M be the present age of the mother and S be the present age of the son.

Q: A tree is 4 1/2 feet tall, it grows 1 3/4 feet every year. How many years is it going to take the…

A: Given Height of tree = 412=92ft Height grows every year= 134=74ft To find number of years in which…

Q: 5 years ago a dad was 6 years older than 3 times his son's age at that time.  In 4 years, he will…

A: Let the dad is x years old and son is y years old now. 5 years ago dad was (x-5) and son was (y-5)…

Q: 4. If the population of the country doubles in 50 years, how many years it would triple?

A:

Q: What is Farah's age twenty years from now if she was x years old 10 years ago?

A: Given thatFarah's age is  x years before 10 years agoTo find Farah's age after 20 years.

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: Sally is 3 times as old as John. 8 years from now, Sally will be twice as old as John. How old is…

A:

Q: If 10% of a radioactive substance decays after 33 years how much will remain after 200 years?

A:

Q: Student A is 35yrs old now. 3 yrs ago, student A  was 4 times as old as Student B. how old is…

A: Given, student A is 35yrs old and 3 yrs ago, student A  was 4 times as old as student B To find the…

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: A father is 4 times as old as his son. In 20 years the father will be twice as oldas his son. Find…

A:

Q: A bacteria doubles every 12 minutes.  If we started with 10 bacteria how many will we have after 30…

A: A bacteria doubles every 12 minutes and we started with 10 bacteria.We have to find how many…

Q: An Oriental rug is 52 years old and a Persian rug is 16 years old. How manyyears ago was the…

A: Let x years ago the Oriental rug was four times as old as the Persian Rug.  x years ago the Oriental…

Q: 8 years ago, John was 10 years old. How many years from now will he be three times his age from 8…

A: Let the present age of John be X Then as 8 years ago John was 10 years old X-8=10 X=10+8 X=18.

Q: It typically takes 4 years to finish an undergraduate degree. How long is 4 years in seconds?

A:

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

A: Topic = Algebra As per guidelines ,At a time only one question can be answered out of different…

Q: A mother is now three times as old as her daughter. In 4 years, the mother will be four times as old…

A: Let Mother's age now is M years Daughter's age is D years Given mother is now three times as old as…

Q: A person with a normal body temperature of 36 °C dies in an accident while traveling by car. The…

A: A person with a normal body temperature of 36 °C dies in an accident while traveling by car. The…

Q: John Mark is 38 years younger than Alondra. 9 years ago, Alondra's age was 3 times John Mark's age.…

A: Here we consider John Mark age as an unknown and then will make linear equation using given…

Q: Renren is 4 times as old as Mark. six years from now, he will be twice as old as Mark. How old are…

A:

Q: A man is 6 years older than 3 times his son's age. Five years from now the sum of their ages will be…

A: Let x be the son's age, then the age of man is 3x + 6, because  man is 6 years older than 3 times…

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: In a lab experiment, 80 bacteria are placed in a petri dish. The conditions are such that the number…

A: Given :In a lab experiment, 80 bacteria are placed in a petri dish. The conditions are such that the…

Q: The ages of the two persons differ by 20 years. If 5 year ago, the older one be 5 times as old as…

A: