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85% (00:54) correct
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John is collecting coins. If the amount he collected last year was 80% of the amount he collected this year, what is the percent increase of the coins that he collected from last year to this year?
A. 10%
B. 15%
C. 20%
D. 25%
E. 30%
A. 10%
B. 15%
C. 20%
D. 25%
E. 30%
25 Dec 2016, 18:42
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You get percent increase = (after−before)/before(100). If you assume the total number of coins collected this year as 100c, the number of coins collected from last year becomes 100c(80%)=80c. In other words, if 80c -> 100c,
Percent increase = (100c−80c)/80c(100) = 20c/80c(100)=25, so you get 25%.
Therefore, the answer is D.
Answer: D
Percent increase = (100c−80c)/80c(100) = 20c/80c(100)=25, so you get 25%.
Therefore, the answer is D.
Answer: D
22 Apr 2017, 01:01
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MathRevolution
Please add options as well in question
Please add options as well in question
