SOLUTION: An office supply store recently sold a black printer ink cartridge for $15.99 and a color printer ink cartridge for $24.99. At the start of a recent fall semester, a total
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Question 1162220: An office supply store recently sold a black printer ink cartridge for $15.99 and a color printer ink cartridge for $24.99. At the start of a recent fall semester, a total of 47 of these cartridges was sold for a total of $940.53. How many of each type were purchased? Answer by ikleyn(52776) (Show Source):
Let x = the number of the $24.99 cartridges sold.
Then the number of the $15.99 cartridges is (47-x).
The equation for total money received is
24.99x + 15.99*(47-x) = 940.53.
From the equation,
x = = 21.
ANSWER. 21 cartridge at $24.99 and the rest, 47-21 = 26 cartridges at $15.99.
