Question

There are 20 bicycles and 10 cars parked in the parking lot. Each bicycle had two wheels and each car had four wheels. How many wheels are there in total?

Answer 1

20 × 2 = 40 bicycle wheels
10 × 4 = 40 car wheels
40 + 40 = 80 wheels total

Answer 2

20(2) + 10(4)
40 + 40
80

There are 80 wheels in total

hope this helps