How much does the school have to charge for each candy bar to make a profit of 10 dollars per box?

The complete question is

A school purchases boxes of candy bars.

• Each box contains 50 candy bars.

• Each box costs $30.

How much does the school have to charge for each candy bar to make a profit of

$10 per box?

step 1

charge for each box $10

so

the new box cost $10+$30=$40

step 2

divide the new box cost to total candy bars

$40/50=$0.80

the answer is

the school have to charge for each candy bar $0.80