Question 56If x varies inversely as y and when x = 6 y

Question 56If x varies inversely as y and when x = 6 y
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Question 56

If x varies inversely as y and when x = 6, y = 8, then x = 8, the value of y is 10.

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Right Answer is:

SOLUTION

False
if x varies  inversely as y. i.e. xy = k (constant)
If                    x = 6 and y = 8
∴xy=6×8=48
But if x = 8 and y = 10
∴xy=8×10=80
Here, 48≠80
Hence, the value of y is not 10.

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