A recipe that makes 6 servings calls for 1/2 cup of butter. Nancy modifies the recipe so that it can serve 8. How many cups of butter does Nancy need?
First get an idea about then answer. can you agree that it is going to take ore 1/2 cup to serve 8 compared to serving 6?
Yes
Good, are you studying ratio and proportions now?
no
Do you know about ratio and proportions?
Ratio yes the other no
O.K. Thats enough. The ratio for the number of servings is 8 to 6 or 8/6 which further reduces to 4/3. Do you follow that? In other words the amount of butter will need to increase by that ratio.
i know
To figure out what that is, take the amount of butter needed for 6 and multiply it by 4/3 to get the amount of butter for 8.
And remember it should be larger than 1/2.
I got 8
that would look like this 1/2 X 4/3 = ??
Thats larger for sure, bu that is too much butter.
Answer: = 2/3
8 is the number of servings that she is preparing for. For 6 she needed 1/2 cup, for 8 she needs more but less than 8 cups! Absolutely 2/3 cup of butter is good.
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