Question

solve sixth one and become a branalist

Answer 1

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Answer 2

Given: Hari:harry = 5:7
Let the age be x
So it’s 5x:7x

4 year from now:-
5x + 4 : 7x + 4
Or
5x + 4 / 7x + 4

And this ^ is equal to 3 : 4 or 3/4(given)

ATQ

5x + 4 / 7x + 4 = 3/4
(Cross multiply)

4(5x+4) = 3(7x+4)
20x + 16 = 21x + 12
16-12 = 21x-20x
4 = x
Present ratio:- 5x : 7x
5*4= 20 years ( hari’s age)
7*4 = 28 years ( harry’s Age)

Hence proved


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