- Bob is saving up for a gaming desktop so he can better distract himself from the difficulties of life. He earns $4,000 per month as a silversmith, and he pays $2,200 per month in various bills and groceries. He knows the computer costs $4399.99 (before taxes).

a) What is the cost of the computer with tax? (HST is 13% on all sales items)

b) If Bob wanted to have at least $12,000 in savings before buying the computer, how many months would it take for Louis to buy it?