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If b/c = 1.25, then c is what percent of b?

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Bunuel
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If b/c = 1.25, then c is what percent of b? [#permalink] New post   01 Jul 2021, 05:30
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If b/c = 1.25, then c is what percent of b?

(A) 0.008
(B) 0.08
(C) 0.8
(D) 8
(E) 80
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E
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BrentGMATPrepNow
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Re: If b/c = 1.25, then c is what percent of b? [#permalink] New post   04 Nov 2021, 15:12
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Bunuel wrote:
If b/c = 1.25, then c is what percent of b?

(A) 0.008
(B) 0.08
(C) 0.8
(D) 8
(E) 80


The quickest solution is to find a pair of values for b and c that satisfy the given information (b/c = 1.25)

For example, it could be the case that b = 125 and c = 100 (since 125/100 = 1.25)

At this point, the question "c is what percent of b?" becomes "100 is what percent of 125?"
Well, we know that 62.5 is 50% of 125, which means 100 must be more than 50% of 125

Answer: E
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Abhishek009
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Re: If b/c = 1.25, then c is what percent of b? [#permalink] New post   01 Jul 2021, 08:38
Bunuel wrote:
If b/c = 1.25, then c is what percent of b?

(A) 0.008
(B) 0.08
(C) 0.8
(D) 8
(E) 80


\(\frac{b}{c} = \frac{5}{4}\)

So, c is \(\frac{4}{5}*100 = 80\), Answer must be (E)
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If b/c = 1.25, then c is what percent of b? [#permalink] New post   01 Jul 2021, 08:50
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Bunuel wrote:
If b/c = 1.25, then c is what percent of b?

(A) 0.008
(B) 0.08
(C) 0.8
(D) 8
(E) 80


We can translate the question to \(c = x\%*b?\) Then we want to find \(x = \frac{100c}{b}\).

We are given \(\frac{b}{c} = 5/4\), then \(\frac{100c}{b} = 100*\frac{4}{5} = 80\).

Ans: E
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If b/c = 1.25, then c is what percent of b? [#permalink]
01 Jul 2021, 08:50

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