Question

Anu is 5 years elder to Raju.if sum of their age is 31. Then find their age.

Answer 1

Answer:

Answer

The ratio of Hari's and Harry's present ages is 5:7

So, let their ages be 5x and 7x

After 4 years their ages will be in ratio 3:4

Therefore,(5x+4)/(7x+4)=3/4

or, 4(5x+4)=3(7x+4)

or, 20x+16=21x+12

or, 16−12=21x−20x

or, 4=1x

or, x=4

Therefore, present age of Hari = 5x=(5×4)=20 years.

Present age of Harry =7x=(7×4)=28 years

The sum of their age is 28+20=48years

Answer 2

Answer:

let Raju's age be x

Anu's age=x+5

x+x+5=31

=)2x=31-5

=)2x=26

x=13,x+5=18