The ratio of two numbers is 4 5 But if each number is increased by 20 the raiio becomes 6 7 The...........

Quantitative Aptitiude (CLAT) Ratio, Proportion

The ratio of two numbers is 4:5. But, if each number is increased by 20, the raiio becomes 6:7. The sum of such numbers is:

100

Let numbers be 4x and 5x.
Now, (4x + 20) : (5x + 20) = 6 : 7
i.e.28x + 140 =30x + 120
i.e.x = 10
i.e.the numbers are 40 and 50
i.e. sum = 90

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