Question

The difference in the age of Tina and Mina is 20 years. If 5 years ago, Tina was 5 times older than Mina, then find their present ages. *
1.Tina - 30 years , Mina - 10 years
2.Tina - 40 years , Mina - 20 years
3.Tina - 50 years , Mina - 30 years
4.Tina - 60 years , Mina - 40 years​

Answer 1

Step-by-step explanation:

Tina, at 20, is 5 times as old as her brother, then her brother is 20/5, or 4 years old.

Let t be the time before Tina’s brother is half her age. Then:

2(4+t)=20+t

8+2t=20+t

t=12 years

In 12 years Tina will be 32 and her brother will be 16..or half her age …………..