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Bunuel
A recipe requires 1/2 lb. of shortening and 14 oz. of flour. If the chef accidentally pours in 21 oz. of flower, how many ounces of shortening should be added?

(A) 9
(B) 10
(C) 11
(D) 12
(E) 13

Hello Bunuel,

I am not a native of countries where the unit of weight is lb or oz.
Do I need to learn these conversions? Since miles per hour will also come into question.
Does GMAT provide us the conversion values?
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the conversion unit for OZ to lb is not given,,,can i expect the same in GMAT???
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mohshu
the conversion unit for OZ to lb is not given,,,can i expect the same in GMAT???

No. The question itself will supply the relative conversions. Though you should have a few basic ones memorized: 1 hour = 60 minutes, ... Edited the question to make it more GMAT-like.

Check other Conversion problems to practice in Special Questions Directory.

P.S. 1 lb (pound) = 16 oz (ounces)
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Bunuel
A recipe requires 1/2 lb. of shortening and 14 oz. of flour. If the chef accidentally pours in 21 oz. of flower, how many ounces of shortening should be added?

1 lb (pound) = 16 oz (ounces)

(A) 9
(B) 10
(C) 11
(D) 12
(E) 13

We are given that a recipe needs 1/2 x 16 = 8 ounces of shortening and 14 ounces of flour; thus, the recipe’s ratio of shortening to flour is 8/14 = 4/7. Since 21 ounces of flour were used, we need to determine how many ounces of shortening should be added. We can let x = the amount of shortening to be added:

4/7 = x/21

84 = 7x

12 = x

Answer: D
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