Ratio of the earnings of A and B is 4 : 7 respectively. If the earnings of A increase by 50% and the earnings of B decrease by 25% the new ratio of their earnings becomes 8 : 7 respectively. What are A's earnings?
Ratio of the earnings of A and B is 4 : 7 respectively. If the earnings of A increase by 50% and the earnings of B decrease by 25% the new ratio of their earnings becomes 8 : 7 respectively. What are A's earnings?
ARs.26,000
BRs.28,000
CRs.21,000
DData inadequate
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Correct answer is: Data inadequate
Explanation:
Let the earnings of A and B be Rs.4x and 7x respectively.
After 50% increase. A's earnings = 150% of 4x
After 25% decrease, B's earning = 75% of 7x
Ratio = 150% of 4x : 75% of 7x = 8 : 7
But their total earnings are unknown.
Hence A's earnings can't be known.
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