Question

A group of tourists spends $168 to rent snorkels and fins. A total of 10 snorkels and 12 pairs of fins are rented. Renting a snorkel costs three times as much as renting a pair of fins. How much does it cost to rent a snorkel?

Answer 1

10s + 12f = 168
s = 3f

Substitute 3f for s.

10(3f) + 12f = 168

30f + 12f = 168

42f = 168

f = $4

s = 3(4) = 12

The snorkels cost $12