Caroline oakes 12 jars of jam in a box. she has 40 boxes. she has 542 jars of jam. how many jars of jam will she have left when all the boxes are full

The answer should be 60

The answer is 62. I hope this helped you!!

Ithink you're supposed to multiply 12.50 which is how much he makes per hour and then multiply it by each number then add whats left togrther and there's your answer