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A thoroughly blended biscuit mix includes only flour and baking powder. What is the ratio of the number of grams of baking powder to the number of grams of flour in the mix?
(1) Exactly 9.9 grams of flour is contained in 10 grams of the mix.
(2) Exactly 0.3 gram of baking powder is contained in 30 grams of the mix
(1) Exactly 9.9 grams of flour is contained in 10 grams of the mix.
(2) Exactly 0.3 gram of baking powder is contained in 30 grams of the mix
21 Jul 2014, 10:09
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Gmatbattle
A thoroughly blended biscuit mix includes only flour and baking powder. What is the ratio of the number of grams of baking powder to the number of grams of flour in the mix?
(1) Exactly 9.9 grams of flour is contained in 10 grams of the mix.
(2) Exactly 0.3 gram of baking powder is contained in 30 grams of the mix
Dear Gmatbattle,(1) Exactly 9.9 grams of flour is contained in 10 grams of the mix.
(2) Exactly 0.3 gram of baking powder is contained in 30 grams of the mix
I'm happy to help.
This is a very easy question. It's almost too easy to appear on the GMAT. Keep in mind, it doesn't provide very rigorous practice for the GMAT Quant section.
Let's say that B is the ratio (baking powder):(whole), and F is the ratio (flour):(whole). Notice that B + F = 1, so that if we know one, we instantly know the other. There is really only one unknown here. The answer to the prompt would be B/F.
Statement #1 tell us F = 9.9/10 = 0.99. From this, we could find B, and then find B/F. This statement is sufficient.
Statement #2 tell us B = 0.3/30 = 0.01. From this, we could find F, and then find B/F. This statement is sufficient.
Both statements sufficient. Answer = (D)
Here are some more challenging practice problems on ratios:
https://magoosh.com/gmat/2013/gmat-quant ... oportions/
Mike
24 May 2017, 06:38
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mikemcgarry
Gmatbattle
A thoroughly blended biscuit mix includes only flour and baking powder. What is the ratio of the number of grams of baking powder to the number of grams of flour in the mix?
(1) Exactly 9.9 grams of flour is contained in 10 grams of the mix.
(2) Exactly 0.3 gram of baking powder is contained in 30 grams of the mix
Dear Gmatbattle,(1) Exactly 9.9 grams of flour is contained in 10 grams of the mix.
(2) Exactly 0.3 gram of baking powder is contained in 30 grams of the mix
I'm happy to help.
This is a very easy question. It's almost too easy to appear on the GMAT. Keep in mind, it doesn't provide very rigorous practice for the GMAT Quant section.
Let's say that B is the ratio (baking powder):(whole), and F is the ratio (flour):(whole). Notice that B + F = 1, so that if we know one, we instantly know the other. There is really only one unknown here. The answer to the prompt would be B/F.
Statement #1 tell us F = 9.9/10 = 0.99. From this, we could find B, and then find B/F. This statement is sufficient.
Statement #2 tell us B = 0.3/10 = 0.01. From this, we could find F, and then find B/F. This statement is sufficient.
Both statements sufficient. Answer = (D)
Here are some more challenging practice problems on ratios:
https://magoosh.com/gmat/2013/gmat-quant ... oportions/
Mike
Hi Mike : I think its not 0.3 but its 0.1 (because 0.3 -- 30 0.1 -- 10 ).
