A: I played bumper cars 9 times.
2, 18÷3=6 (yuan)
A: I've played the arrow boat six times.
3,4× 4+2 =18 (yuan)
Answer: Play inertia pulley 4 times, bumper car 1 time.
4.3×2+4×3= 18 (yuan)
A: Two arrows and three inertia blocks.
There can also be other combinations, and the above answers are for your reference. Understand, hope to adopt!