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21 Jun 2021, 03:44
Kudos
Bookmarks
B
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Difficulty:
95%
(hard)
Question Stats:
32% (01:13) correct
68%
(00:59)
wrong
based on 307
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90 is what percent greater than a number which is 5 times greater than 30% of 40
A. 20%
B. 25%
C. \(\frac{100}{3}\) %
D. 50%
C. 60%
A. 20%
B. 25%
C. \(\frac{100}{3}\) %
D. 50%
C. 60%
21 Jun 2021, 05:25
Kudos
Bookmarks
=> 30% of 40 = \(\frac{30 }{100} * 40 = 12\)
=> 5 times of 12 = 5 * 12 = 60
=> 5 times greater than 30% of 40 = 5 * 12 = 60 + 12 = 72
=> 90 is what percent greater than 72: \(\frac{90 - 72 }{ 72} * 100 = 25%\)
Answer B
Answer
=> 5 times of 12 = 5 * 12 = 60
=> 5 times greater than 30% of 40 = 5 * 12 = 60 + 12 = 72
=> 90 is what percent greater than 72: \(\frac{90 - 72 }{ 72} * 100 = 25%\)
Answer B
Answer
General Discussion
21 Jun 2021, 23:43
Kudos
Bookmarks
"=> 5 times greater than 30% of 40 = 5 * 12 = 60 + 12 = 72"
5 times greater than 30% of 40 = 5*(0.3*40) = 5*(12) = 60 . Why the extra '+12' ?
5 times greater than 30% of 40 = 5*(0.3*40) = 5*(12) = 60 . Why the extra '+12' ?
