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11 Oct 2019, 02:48
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C
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Difficulty:
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Question Stats:
92% (00:41) correct
8%
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wrong
based on 59
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The price of copper rose by 25 percent and then fell by 20 percent. The price after these changes was
A. 20 percent greater than the original price
B. 5 percent greater than the original price
C. the same as the original price
D. 5 percent less than the original price
E. 15 percent less than the original price
A. 20 percent greater than the original price
B. 5 percent greater than the original price
C. the same as the original price
D. 5 percent less than the original price
E. 15 percent less than the original price
11 Oct 2019, 03:29
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Bunuel
Let the initial price of copper = 100
Initially increased by 25% = 1.25*100 = 125
Then fell by 20% = 0.80*125 = 100 --> Same as the original price
IMO Option C
PrashantLakhotia
11 Oct 2019, 08:51
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Bunuel
As per the question, the price 1st rose, which makes the new price as 1.25x. Then when the price falls by 20%, therefore, the new price would be 1.05x.
Hence, B.
