A trader normally makes a profit of 40 % on items he sells . If he reduces the price by 10% his sales increased by 40% . Let x be the total profit when he doesn't reduce the price and y the total profit when he reduces the price what is the ratio of y to x ?
A. 1.28
B. 0.78
C. 1.11
D. 0.91
E. None of these
সঠিক উত্তরঃ
D.
0.91
Explanation:
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