Terence decided to find out if it was less expensive to ride his bike to school or buy a skateboard to ride instead. Assume the bike would require 2 new tubes throughout the year as its only expense. Also assume that skateboard can be used for one year only.

The price of 1 tube is $9.50. The price of the skateboard is $22.00. Which would be a less costly means of transportation? Write your answer in the box below.

Instruction : write the answer as bike or skateboard (in small letters).