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A cafe sells puffs. 5/9 are beef and 1/3 are chicken. The remaining 18 are tuna. Calculate 1. What fraction of the puffs are tuna and 2. How many puffs are there in all. I reall…
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A cafe sells puffs. 5/9 are beef and 1/3 are chicken. The remaining 18 are tuna. Calculate 1. What fraction of the puffs are tuna and 2. How many puffs are there in all. I reall…
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Jun 2, 2017
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A cafe sells puffs. 5/9 are beef and 1/3 are chicken. The remaining 18 are tuna. Calculate 1. What fraction of the puffs are tuna and 2. How many puffs are there in all. I really need to see the working for this.
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Zach Inglis
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5/9 + 1/3 + tuna = 1
tuna = 1 - 5/9 - 1/3. LCM = 9
tuna = 9/9 - 5/9 - 3/9 = (9 - 5 - 3)/9 = 1/9
Fraction of tuna = 1/9
Let all the puffs be x. Recall there are 18 tuna
(1/9)x = 18
x/9 = 18
x = 9*18
x = 162
There are 162 puffs in all.
Hongbo
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Jun 4, 2017
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Let n be the total number of puffs. Now we can write:
Adding the fractional value of n, we get:
Simplifying and rearranging gives us:
Therefore we can simplify to get:
and finally
The fraction of the puff that are tuna is found from:
Catrapture
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Jun 6, 2017
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Catrapture
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