Question

the ages of A and B are in the ratio 3 is to 4 5 years later the sum of their ages will be 31 years what are their present ages

Answer 1

Answer: x = 3 . So, 3x = 9 & 4x =12

Step-by-step explanation:

Answer 2

let the common ratio between the ages of A and B be x
age of A be 3x and B be 4x
after 5yrs
A -3x+5
B-4x+5
3x+5+4x+5=31
7x+10=31
x=3
3x=9yrs
4x=12yrs