Question 922764: marie bougth 4apples and 8orange for 46
juan bought 6apples and 16 orange for 87
what is the prise of 5 apples.
Answer by ankor@dixie-net.com(22740)   (Show Source):
You can put this solution on YOUR website! Marie bought 4 apples and 8 oranges for 46.
Juan bought 6 apples and 16 oranges for 87.
:
let a = price of apples.
let r = price of oranges
:
Find the price of 1 apple, using elimination method
4a + 8r = 46
6a +16r = 87
multiply the 1st equation by 2, subtract the 2nd equation
8a + 16r = 92
6a + 16r = 87
---------------Subtraction eliminates r, find a
2a + 0 = 5
a = 5/2
a = 2.5 is the price of one apple
"What is the price of 5 apples?"
5 * 2.5 = 12.5
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