Question

The ages of saurabh and Anshu are in the ratio of 5:7 . Four year later the sum of their ages will be 56 year. What are their present ages..

Answer 1

dear
let the age of saurabh be 5x
let the age of anshu be 7x
after 4 years
there age will be 5x+4 and 7x+4
ATQ
$5x + 4 + 7x + 4 = 56 \\ 12x + 8 = 56 \\ 12x = 56 - 8 = 48 \\ x = 48 \div 12 = 4 \\ x = 4$
saurabh age 5x=5×4=20
anshu age 7x=7×4=28
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Answer 2

let their ages be 5x and 7x

then A.T.Q,

5x+4+7x+4 = 56

12x=56-8

x = 48/12=4


saurabh's age =5×4=20

Anshu's age =7×4 =28