Bunuel wrote:

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

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

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Sometimes at night I would sleep open-eyed underneath a sky dripping with stars.

I was alive then.

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