Question

Henly is going over his office supply invoices. On the invoice he checks off 450 ballpoint pens, 15 staplers, and 20 packs of post-it notes. The price of the pens is $.35 each, the staplers are $1.25 each, and the post-it notes are $.50 per pack. How much should the invoice total?

Answer 1

There are 450 pens at $0.35 each, so the total cost is 450 x $0.35 = $157.50
There are 15 staplers at $1.25 each, so the total cost is 15 x $1.25 = $18.75
There are 20 packs of post-it notes at $0.50 each, so the total cost is 20 x $0.50 = $10

The invoice is the total cost of all of these things, meaning it is $157.50 + $18.75 + $10 = $186.25