the ratio of A's and B's income is 4:7 if A's income increase by 50per cent and that of B's decrease by 25 per cent the new of there ratio of income become 8:7 . find A's income
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Ratio of earning of A and B =4:7
Let the earning of A and B is 400x and 700x
Earning of A after increasing 50%=400x+200x=600x
Earning Of B after decreasing 25%
=700x+700x*25/100=700x+175x=875x
New ratio of their earning
=600x/875=8/7
100x=8*875/175=8*5=40
So A’s actual earning
=400x=4*40=160 unit
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