Which of the following values is greatest?
(A) 11% of 89(B) 22% of 78(C) 33% of 67(D) 44% of 56(E) 55% of 45
Is there any trick to answer this question faster without having to multiply everything out?
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Ignore the percents.bubblynyg wrote:Which of the following values is greatest?
(A) 11% of 89(B) 22% of 78(C) 33% of 67(D) 44% of 56(E) 55% of 45
To make the values easier to compare, rephrase them as multiples of 11.
A = 11*89.
B = 22*78 = 11*2*78 = 11*156.
C = 33*67 = 11*3*67 = 11*201.
D = 44*56 = 11*4*56 = 11*224.
E = 55*45 = 11*5*45 = 11*225.
The value in red is greatest.
The correct answer is E.
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