SOLUTION: An orange has 20 fewer calories than a banana. If 7 bananas have the same number of calories as 9 oranges, how many caloris does eah have?

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Question 22591: An orange has 20 fewer calories than a banana. If 7 bananas have the same number of calories as 9 oranges, how many caloris does eah have?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Let "x" be number of calories in a banana.
Then "x-20" is number of cals in an orange.
Equation:
7x = 9(x-20)
2x =180
x = 90 calories in a banana
x-20 = 70 calories in an orange
Cheers,
Stan H.