Question 118926
4O+5A=3.56
3O+4A=2.76 
NOW MULTIPLY THE FIRST EQUATION BY 3 & THE SECOND EQUATION BY -4 & ADD:
12O+15A=10.68
-12O-16A=-11.04
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-A=-.36 
A=.36 WHICH IS THE PRICE OF ONE APPLE.
4O+5*.36=3.56
4O+1.80=3.56
4O=3.56-1.80
4O=1.76
O=1.76/4
A=.44 FOR 1 ORANGE.
PROOF:
3*.44+4*.36=2.76
1.32+1.44=2.76
2.76=2.76