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LIC AAO Model Paper 7

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Question : 39 of 160

Marks: +1, -0

Ratio of earnings of A and B is 8 : 9 respectively. If the earnings of A increase by 50% and the earnings of B decrease by 25%, the new ratio of their earnings becomes 16:9 respectively. What are A’s earnings?

Rs. 37,000
Rs. 28,500
Rs. 22,000
Cannot be determined
None of these

Solution:

Let the earnings of A and B be Rs. 8x nd Rs. 9x respectively.

Now, after changes in their earnings,

A’s earning

= 8x ×

\frac{150}{100}

= Rs. 12x

B’s earning

= 9x ×

\frac{75}{100}

= Rs.

\frac{27x}{4}

Clearly, we need sum of their earnings etc. to get the desired result.

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