Bunuel wrote:
If the price of gasoline increases by 25% and Ron intends to spend only 15% more on gasoline, by how much percent should he reduce the quantity of gasoline that he buys?
A. 6.66%
B. 8%
C. 10%
D. 12%
E. 12.5%
Let price of gasoline earlier = 100
So price of gasoline Later = 125 (25%higher)
Let consumption earlier = 100
So total expense earlier = 100*100 = 10000
New total expense = 11500 (15% higher)
New consumption of gasoline = 11500/125 = 92
Now, the consumption has changed from 100
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