Question

Mr. Kelly buys a total of 40 boxes of pens and pencils for his class. Each box of

pens costs $5. Each box of pencils costs $2. Mr. Kelly spends a total of $131 on
the pens and pencils.
Which equations form a system of equations that can be used to determine the
number of boxes of pens, x, and the number of boxes of pencils, y, that Mr. Kelly
buys? Select two correct answers.
A. x+y = 40
B. x+y = 131
C. 5x+2y = 40
D. 2x + 5y = 40
E. 5x + 2y = 131
F.2x + 5y = 131

Answer 1

The correct equations that form a system of equations to determine the number of boxes of pens, x, and the number of boxes of pencils, y, that Mr. Kelly buys are:

A. x+y = 40 (since he buys a total of 40 boxes)

E. 5x + 2y = 131 (since he spends a total of $131)

Therefore, the correct answers are A and E.