Tutors Answer Your Questions about Age Word Problems (FREE)
Question 621572: Dmitri needs 7 liters of a 24% solution of sulfuric acid for a research project in molecular biology. He has two supplies of sulfuric acid solution: one is an unlimited supply of 28% solution and the other an unlimited supply of the 14% solution. How many liters of each solution should Dmitri use?
Click here to see answer by dragonwalker(72) |
Question 622296: The formula S=C(1+r)^t models inflation, where C = the value today, R = the annual inflation rate, and S = the inflated value t years from now. Use this formula to solve the following exercise.
Round your answer to the nearest dollar and make sure to include the dollar sign.
If the inflation rate is 5% , how much will a house now worth 780,000$ be worth in 3 years?
ANSWER: .
Click here to see answer by math-vortex(472)  |
Question 622613: Mrs. West is 14 years younger than her aunt. If Mrs. West's age in years is as much below 60 as her aunt's age is over 40. How old is each person?
I know the answer is aunt = 57
And West's = 43
But I don't know HOW they got the answer. Can you show me the steps please?
Click here to see answer by math-vortex(472)  |
Question 622702: Three mothers- Malu,Eva and Josie- have between them a total of 14 children, 10 of whom are girls. Eva has no more children than Malu, who has 3 children. Josie has 6 more-girls than boys and the same number of boys as Malu has girls. How many girls each do Josie and Malu have?
Click here to see answer by MathTherapy(1425)  |
Question 622976: Paul and his brothers Ted and Al worked out one day that their father was 3 times as old as Ted. Also that, in three years time, he would be three times as old as Paul would be, and that in 6 years time he would be twice as old as Al would be. Al was two years older than Ted.
How old is their father?
Click here to see answer by ankor@dixie-net.com(15656)  |
Question 623550: danny is 7 years older than his brother. If the product of their ages is 120, find their ages. I have tried the equation n(n+7)=120. This does not make sense, however, since 7 does not divide into 120 evenly.
Click here to see answer by Theo(3464)  |
Question 623714: John, Cindy, and Larry all participate in different sports after school. One day, John told Larry, “My sport is tougher than yours, because we had to run three times as many laps as you did yesterday.” Cindy overheard the conversation and told John, “Well, we ran 5 more laps than you did, so my sport must be the toughest.” If Larry had to run 3 laps in practice, how many laps did Cindy run?
Click here to see answer by solver91311(16897)  |
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