Question

the present ages of Ravi Shashi are in the ratio 6 ratio 7 4 letter their ages will be in ratio of 8 ratio 9 what is the sum of their present age

Answer 1

Ravi's age: Shashi's age
6:7
let their present age be x

then Ravi's present age = 6x
Shashi's present age = 7x

4 yrs later

Ravi's age :Shashi's age
8:9

6x+4 : 7x+4= 8 : 9

6x + 4/7x +4 = 8/9
9(6x+4) = 8 (7x +4)
54 x + 36= 56 x + 32
54 x - 56 x = 32 - 36
-2 x = -4
x= -4/-2
x=2

present ages..
Ravi= 6x =6*2=12
shashi=7x= 7*2=14

Sum of their present ages.

12+14=26

Answer 2

ratio of there ages =6x:7x
6x+4/7x+4=8/9
9 (6x+4)=8(7x+4)
54x+36=56x+32
4=2×

x=2
sum of present ages=12+14
=26