During a fundraiser at salem church middle school, the school received $10 for every 3 items sold. if the students sold 321 items how much money did the school receive?

$10 is earned for every 3 items sold

The students sold 321 items

There are 2 ways to do this, the first way is to divide the total number of items sold with the amount of every item sold, so:

321 (total items sold) ÷ 3 (items sold in a bundle) = 107

Next, multiply 107 with $10 to find out the total amount of profit.

107 x $10 (per 3 items in a bundle) = $1,070 (total profit)

The next step is to find out how much every single item costs.

Simply divide the number of cash made by selling the bundle of 3.

$10 ÷ 3 = $3.333 (price per item)

Next, multiply $3.333 with the total number of items sold (321), so:

$3.333 x 321 = $1,070 (total profit)

since both sides equal, there are infinitely many olutions.

is the anwser b. (-13)?