Two positive numbers X and Y are inversely proportional. if X increases by 20% then percentage decreases in y is a) 15 b) 16 2/3 c) 17 11/9 d) 25
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Inverse relationship :
XY = k
Y = k/X
X increases by 20%
Y = k/1.2X
Y = (10/12) K/x
10/12Y
Y - 10/12Y = 2/12Y
2/12 × 100 = 16 2/3%
XY = k
Y = k/X
X increases by 20%
Y = k/1.2X
Y = (10/12) K/x
10/12Y
Y - 10/12Y = 2/12Y
2/12 × 100 = 16 2/3%
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