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| − | ==Problem==
| + | #redirect [[2002 AMC 12A Problems/Problem 9]] |
| − | Jamal wants to save 30 files onto disks, each with 1.44 MB space. 3 of the files take up 0.8 MB, 12 of the files take up 0.7 MB, and the rest take up 0.4 MB. It is not possible to split a file onto 2 different disks. What is the smallest number of disks needed to store all 30 files?
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| − | <math>\text{(A)}\ 12 \qquad \text{(B)}\ 13 \qquad \text{(C)}\ 14 \qquad \text{(D)}\ 15 \qquad \text{(E)} 16</math>
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| − | ==Solution==
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| − | We can store a 0.4 MB plus a 0.8 or 0.7 MB file on a disk, but not a 0.8 and a 0.7 together. Hence, since the number of 0.4 MB files and the number of 0.7 or 0.8 MB files together are equal, we can simply discount the number of 0.4 MB files, and our answer is <math>12+3=\boxed{15\Rightarrow\text{(A)}}</math>.
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| − | ==See Also==
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| − | {{AMC10 box|year=2002|ab=a|num-b=10|num-a=12}}
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| − | [[Category:Intermediate Algebra Problems]] | |
