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Drake spent $540 on books. Math books cost $60 and science books cost $80. If he bought a total of 8 books, how many of each kind did he buy?
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12 votes
Drake spent $540 on books. Math books cost $60 and science books cost $80. If he bought a total of 8 books, how many of each kind did he buy?

User Mehdi Satei
by
7.5k points

2 Answers

3 votes
System of equations
(m + s = 8)60
60m + 80s = 540
60m + 60s = 480
20s = 60, s = 3
m + 3 = 8, m = 5
Solution: he brought 3 science and 5 math books
User Gingerbreadboy
by
7.9k points
12 votes

Answer:

He bought 4 in total

User Tom Van Der Woerdt
by
8.3k points
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