If cost of an article worth Rs. 150 is increased by Rs. 15. Then the r

1.	If cost of an article worth Rs. 150 is increased by Rs. 15. Then the rate of change is:
A.	+55%
B.	-65%
C.	+15%
D.	-0.35%
Answer» D. -0.35%

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If cost of an article worth Rs. 150 is increased by Rs. 15. Then the rate of change is:

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