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OpenStudy (anonymous):
if 13 keychains cost $38.35, what is the cost of 20 key chains
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OpenStudy (anonymous):
$38.35 / 13 = $2.95 per keychain. So 20*2.95 = $59.
OpenStudy (anonymous):
thanks for your help
OpenStudy (anonymous):
No problem... those are pretty expensive keychains. :P
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