Question

A race car driver has 28 cars. Each car has 4 tires. He has to replace all the tires on the cars. He has 22 tires right now.

Estimate the total number of tires he needs to buy.

Answer 1

90 tires

Explanation:

Tires needed=28×4

=112 tires

Tires present=22

Tires had to buy=112-22

=90 tires

Answer 2

90 tires

Explanation:

Tires needed=28×4

=112 tires

Tires present=22

Tires had to buy=112-22

=90 tires