A trampoline costs $220 and the sales tax is 6.25%. What is the total cost of the trampoline?

First, turn 6.25% into a number. (Divide by 100)

6.25% ⇒ 0.0625

Now multiply 0.0625 by 220.

220 * 0.0625 = 13.75

The amount of tax is $13.75. Now add that to the origin price, 220.

220 + 13.75 = 233.75

The total cost of the trampoline is $233.75.