SOLUTION: Solve. An apple has 24 fewer calories than a banana. if 7 bananas have the same number of calories as 10 apples, how many calories are in a banana?

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Question 362706: Solve.
An apple has 24 fewer calories than a banana. if 7 bananas have the same number of calories as 10 apples, how many calories are in a banana?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let b = number of calories in a banana
Let b = number of calories in an apple
given:
a+=+b+-+24
7b+=+10a
By substitution:
7b+=+10%2A%28b+-+24%29
7b+=+10b+-+240
3b+=+240
b+=+80
There are 80 calories in a banana