the present ages of tenu and song are in ratio 8:7after 5years the ratio of their ages will be 9:10 find their ages 5years from now
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Answer:
present age
tenu be 8x
song be 7x
after 5 year
tenu age = 8x +5
song age = 7x +5
LHS
8x+5/7x+5 = 9/10
cross multiply
9(7x + 5) =10(8x+5)
63x+45=80x +50
63x - 80x=45-50
15x=5
x =5/15
x=3
present age
tenu 8×3=27
sony 7×3 =21
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