Question

if there is a bike that cost $130 and a discount of 45%, what is the sales price​

Answer 1

A 45% discount means the bike is on sale for 55% of the original price ( 100% - 45% = 55%)

Multiply the original price of  the bike by 55% for the sale price:

130 x 0.55 = 71.50

The sale price is $71.50