| The price of a commodity rises from Rs. 6 per kg to Rs. 7.50 per kg. If the expenditure cannot increase, then the percentage of reduction in consumption is [SSC (CGL) 2011] |
A) 15
B) 20
C) 25
D) 30
Correct Answer: B
Solution :
| Percentage increase \[=\frac{7.5-6}{6}\times 100=25\]% |
| \[\therefore \]Percentage decrease in consumption |
| \[=\frac{a}{100+a}\times 100\] |
| Here, \[a=25%.\]So, \[\frac{25}{125}\times 100=20\]% |
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