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Bunuel
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Bunuel
Irin, Ingrid and Nell bake chocolate chip cookies in the ratio of 9.18: 5.17: 2.05. If altogether they baked a batch of 148 cookies, what percent of the cookies did Nell bake?

A. 0.125%
B. 1.25%
C. 12.5%
D. 125%
E. 0.152%


­
Irin, Ingrid and Nell baked chocolate in the ratios = 9.18 : 5.17 : 2.05

Total ratio = 9.18 + 5.17 + 2.05 = 16.4

Nell contribution proportion = 2.05 / 16.4

= 0.125

= 12.5%

Option C
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We just need the percentage contribution so we can skip finding the absolute value for the individual ratis:

let me take a constant 'k'
Neil contribution = 2.05k
Total ratio of the three people (9.18+5.17+2.05)K=16.4k

Neil contr. % = (2.05k/16.4k)*100
= (1/8)*100=12.5% Option C

Bunuel
Irin, Ingrid and Nell bake chocolate chip cookies in the ratio of 9.18: 5.17: 2.05. If altogether they baked a batch of 148 cookies, what percent of the cookies did Nell bake?

A. 0.125%
B. 1.25%
C. 12.5%
D. 125%
E. 0.152%


­
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