Cost of apple + banana
Algebra
Level
1
In a local grocery store, 1 apple and 2 bananas cost $34. Moreover, 2 apples and 1 banana cost $56. What is the total cost of 1 apple and 1 banana?
The answer is 30.
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1 solution
Adding up both purchases, 3 pings and 3 pongs will cost 3 4 + 5 6 = 9 0 . Dividing by 3, we get that 1 ping and 1 pong will cost 3 9 0 = 3 0 .
Note: We may also proceed to solve for the individual price of a ping and a pong, which are $26 and $4 respectively. However, that is not necessary.