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!