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What is the answer? How do I create two equations?

What is the answer? How do I create two equations?-example-1

2 Answers

5 votes
let x = cost to rent a snorkel and y = cost to rent a pair of fins

12x + 15y = 153
x = 3y

substitute x = 3y into 12x + 15y = 153

12x + 15y = 153
12(3y) + 15y = 153
36y + 15y = 153
51y = 153
y = 3

x = 3* 3 = 9

answer
It costs $9 to rent a snorkel

User Thanasisp
by
5.4k points
4 votes
The answer may be 36 but I am not very sure

User Rjarmstrong
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5.2k points