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If the number of red marbles is three times the number of green marble

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If the number of red marbles is three times the number of green marble [#permalink]

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New post 04 May 2017, 03:38
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A
B
C
D
E

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Question Stats:

76% (00:31) correct 24% (00:19) wrong based on 46 sessions

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If the number of red marbles is three times the number of green marbles in a bowl of marbles with only two colors of marbles, what is the ratio of the green marbles to all the marbles?

A. 1 : 3
B. 1 : 4
C. 3 : 4
D. 3 : 1
E. 4 : 1

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Re: If the number of red marbles is three times the number of green marble [#permalink]

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New post 04 May 2017, 06:14
Given R = 3G

Asked G/Total?

Total = R + G = 3G + G = 4G

G/Total = G/4G = 1/4

The answer is B.
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Re: If the number of red marbles is three times the number of green marble [#permalink]

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New post 04 May 2017, 23:29
Given R/G = 3k/1k

Total = Red + Green = 4k
Green/Total = 1k/4k = 1/4
The answer is B.
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Re: If the number of red marbles is three times the number of green marble [#permalink]

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New post 05 May 2017, 00:38
Red:Green = 3:1

So, lets consider there are 30 red marbles and 10 green marbles in the bowl
(which only contains 2 colors of marbles)
Since we need the ratio of Green marbles to the total of all the marbles.
Total marbles = Red + Green = 10+30
Ratio of Green : Total = 10:40 = 1:4(Option B)
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Re: If the number of red marbles is three times the number of green marble   [#permalink] 05 May 2017, 00:38
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If the number of red marbles is three times the number of green marble

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