Question

At the beginning of the school year, the batteries in all the graphing calculators were replaced. Each calculator required 4 batteries. Office Plus offered a back-to-schoolspecial price of $32.98, including tax, for a package of 20 calculator batteries.How much did it cost to replace all the batteries in 110 graphing calculators?A. $131.92B. $181.39C. $659.60D. $725.56

Answer 1

we have:

each calculator = 4 batteries

$32.98 for 20 calculator batteries

cost of batteries for 110 graphing calculators = ?

`110*4=440\text{ all the batteries}`

then

`\frac{440\text{ }}{20\text{ }}=22`

i.e. you need to buy 22 packages of calculater batteries. and the cost is:

`22*32.98=725.56`

answer is $725.56