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The cost of an order of 10 computer disks and 3 packages of paper was $27. The next order was for 30 disks and 5 packages, and the cost was $65. Find the cost of a single disk and a single package of paper.
11 years ago

Answers

Steve
10d + 3p = 27
30d + 5p = 65

from the first, we see

30d + 9p = 81

so, subtracting, we see that

4p = 16
p=4
so, d=2.50
11 years ago
Evy
the professor answer for the disk is $1.50 who's right?
11 years ago
Steve
well, I see I was wrong. Could you not check my answer?
11 years ago

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