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A biscuit recipe calls for 3 2/3 cups of flour for 1 batch. How many cups are needed for 3 1/4 batches?

2 Answers

1 vote
This problem can be solved easily using a proportion:

3(2)/(3) - 1

x - 3(1)/(4)

So,
x= (3(2)/(3) * 3(1)/(4))/(1)=3(2)/(3) * 3(1)/(4)=(11)/(3) * (13)/(4)=(11*13)/(3*4)=(143)/(12)=11(11)/(12)

The answer:
11(11)/(12) cups are needed.
User Nicholas Blasgen
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6 votes
Multiply 3.6666 by 3.25 to get 11.9167 cups. 
User Ron Inbar
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