Question 122299
At the market you purchase some apples and oranges. There were 12 items purchased. You buy twice as many apples as oranges. 
a. Define the variables.
Let # of oranges be "r"
Then # of apples is "2r" 
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b. Write an algebraic equation using one variable for the above situation.
r + 2r = 12
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c. Solve this equation for the number of apples and oranges you purchase 
3r = 12
r = 4 (# of oranges)
2r = 8 (# of apples)
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Cheers,
Stan H.