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3 years ago

Tom had 260 dollars to spend on 8 books. After buying them he had 12 dollars. How many much did each book cost?

Mathematics

1 answer:

fgiga [73]3 years ago

7 0

You will subtract 12 from 260 and get 248 then you will divide 248 by 8 and get 31 dollars spent per book.

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Step-by-step explanation:

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Answer:

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X=pounds of coffee bean ($0.20 per pound)
y=pounds of coffee bean ($0.68 per pound )

We can suggest this system of equations:
x+y=120
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We can solve this system by substitution method.
x+y=120 ⇒ y=120-x

0.2x+0.68(120-x)=0.54[x+(120-x)]
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x=-16.8/-0.48
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