Ratio Analysis 21
11. Two numbers are in the ratio of 7: 9. If 6 is deducted from both the
numbers, the ratio becomes 5: 7. Find the numbers.
[21 & 27]
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Step-by-step explanation:
let the number be 7x and 9x
6 is deducted from both= 7x-6
9x-6
ATQ
7x-6 = 5
9x-6 7
by cross multiplications
7(7x-6) = 5(9x-6)
49x-42= 45x-30
49x-45x= -30+42
4x = 12
x = 12
4
x = 3
so, 7x=7×3=21
9x=9×3=27
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