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When the price of a commodity is increased by x%, then the percent by which the consumption should be reduced so as not to increase the expenditure is given by:
{x/ (100 + x)} * 100 %
For x = 15
(15/ 115) * 100 = 300/23
x% of y + y% of x = ?

A.	2% of xy	B.	50% of xy
C.	2xy	D.	100% of xy

Answer and Explanation

Answer:2% of xy

Explanation:
x% of y = x/100 * y = xy/100
Similarly, y% of x = xy/100
Addition of the two gives 2 * xy/100 = 2/100 xy = 2% of xy

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