Question 134325
Let h=cost of a hardback book, s=cost of a soft back.
A) 7h+8s=8.37
B) 12h+5s=10.95
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B) 96h+40s=87.6 Multiply each side by 8
A) 35h+40s=41.85 Multiply each side by 5
-----------------subtract
===>61h=45.75
h=45.75/61=0.75
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7*.75 + 8s=8.37
5.25+8s=8.37
8s=8.37-5.25
8s=3.12
s=3.12/8=.39
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Check:
12*.75 + 5*.39 =10.95
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Ed