1.

 When the demand of a commodity decreases by 10% the shopkeeper increases its price by 15%. Find the effect on his sales revenue in per cent.

A. 3.5% (Increase)
B. 4.5% (Increase)
C. 5.5% (Increase)
D. 6.5% (Increase)
Answer» B. 4.5% (Increase)


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