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20 Mar 2018, 22:40
Kudos
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E
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
15%
(low)
Question Stats:
75% (00:44) correct
25%
(00:48)
wrong
based on 108
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One plant grew 6 inches while a second plant grew 250% more than the first plant grew. How much, in inches, did the second plant grow?
(A) 6
(B) 8
(C) 12
(D) 15
(E) 21
(A) 6
(B) 8
(C) 12
(D) 15
(E) 21
20 Mar 2018, 22:42
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Bunuel
4. Percents and Iterest
For more check:
ALL YOU NEED FOR QUANT ! ! !
Ultimate GMAT Quantitative Megathread
21 Mar 2018, 13:38
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Bunuel
10% more than A = (1 + .10) = 1.10A
If percent MORE is > 100, the method is the same: add the percentage in decimal form to 1
250 percent MORE than original =(1 + 2.5)=(3.5)
(original + 250% of original)
(original)*(1 + 2.50) = (original)*(3.5)
A grows 6 inches
B grows 250% more than A = 3.5A
(3.5) * 6 = 21 inches
OR
100% MORE than 6 = 12 (=twice)
200% MORE than 6 = 18 (=thrice)
50% MORE than 6 = 3 (=\(\frac{1}{2}\) of 6 more)
(250%) = (200%+50%) = (18+3) = 21
Answer E
*Percent OF means multiply:
10% of 100 = (.10) * 100 = 10
200% of 5 = (2) * 5 = 10
Percent MORE THAN and percent GREATER THAN
indicate addition after multiplication. Both mean:
add the given percent to the original number
You could find 250% of A=6 and add to original number
250% of 6?\(\frac{250}{100}=(\frac{5}{2}*6)=15\)
Add 15 to original: \((15 + 6) = 21\)
OR combine multiplication and addition
250% more than A=(100% of A+250% of A)= 350% of A
250% more than A = (1A + 2.5A) = 3.5A
(3.5) * 6 = 21
