Give the step-by-step reasoning process and then the final answer. Paula wants to ride the go-karts 1 time and the bumper cars 4 times. It costs 4 tickets to ride the go-karts and 5 tickets to ride the bumper cars. How many tickets does Paula need?
Paula wants to go on the go - kart 1 time and the bumper cars 4 times. The number of tickets needed for the go - karts is 1 × 4 = 4. The number of tickets needed for the bumper cars is 4 × 5 = 20. Paula needs 4 + 20 = 24 tickets.
The final answer: 24.