Let x = boxes of Pilot and y = boxes of Bic
x + y =120 therefore
x = 120 - y
17.99x + 7.49y = 1234.8
Substitute 120-y for x in second equation and solve for y. Insert that value into the first equation and solve for x. Check by inserting both values into the second equation.
Staples recently charged $17.99 per box of Pilot Precise rollerball pens and $7.49 per box for Bic Matic Grip mechanical pencils. If Kelling Community College purchased 120 such boxes for a total of $1234.80, how many boxes of each type did they purchase?
3 answers
32 boxes of pilot and 88 boxes of Bic
32x17.99 = 575.68
88x 7.49 = 659.12
total = 1234.80
32x17.99 = 575.68
88x 7.49 = 659.12
total = 1234.80
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