Question

18 years ago ruby was three times as old as bobby. the sum of their present ages is 96 year. how old is bobby now.​

Answer 1

Answer:

33

Step-by-step explanation:

Let Bobby's age 18 years ago be x.

ATQ,

Ruby's age 18 years ago=3x

∴Bobby's present age=x+18

Ruby's present age =3x+18

Again,

3x+18+x+18

=4x+36

Next

4x+36=96

4x=96-36

x=60/4

x= 15

Bobby's present age =15+18=33