SOLUTION: john is 5 years younger than robert. If the sum of their ages in 8 years time is 37, find john's age in 3 years time?
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Question 1112481: john is 5 years younger than robert. If the sum of their ages in 8 years time is 37, find john's age in 3 years time?
Found 2 solutions by greenestamps, mananth:
Answer by greenestamps(13203) (Show Source): You can put this solution on YOUR website!
Mental arithmetic/logical reasoning....
If the sum of their ages 8 years from now will be 37, then the sum of their ages now is 37-16 = 21.
If the sum of their ages now is 21 and John is 5 years younger than Robert, then John is 8 and Robert is 13.
So John's age 3 years from now will be 8+3 = 11.
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
john is 5 years younger than robert. If the sum of their ages in 8 years time is 37, find john's age in 3 years time?
let robert's age be x
john's age is x-5 years
after 8 years Robert will be x+8
After 8 years John will be (x-5)+8
sum of their ages then (x+8)+(x-5)+8 =37
2x+11=37
2x=37-11
2x=26
x=13
Robert's age = 13-5=8
After 3 years Robert will be 8+3 = 11 years
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