Question

The sum of the ages of A and B is 58 years . After 5 years , B will be 3 times as old as A . What is the present age of B ?​

Answer 1

A+B=58

After 5 years

3(A+5)=B+5

3A+15=B+5

3A-B=-10

-B=-10-3A

B=10+3A

.:A+10+3A=58

4A=48

A=12, B=46