X Rides on merry-go-round.
Y Rides on pirate ships.
Eq1: X + Y = 8 Rides.
Eq2: 0.9X + 0.6Y = 6.30.
Multiply Eq1 by -0.9:
-0.9X - 0.9Y = - 7.20.
0.9X + 0.6Y = 6.30.
Add the Eqs and get:
-0.3Y = -0.9,
Divide both sides by -0.3:
Y - 3 Pirate ship rides.
Lily went for 8 rides at the county fair. Some rides were on the merry-go-round, and the rest were on the pirate ship. The total cost of all rides was $6.30. Each pirate ship ride cost $0.60, and each merry-go-round cost $0.90. How many pirate ship did Lily take?
1 answer