Clive is buying olives for dinner. He has $10 to spend and needs 80 olives. A jar of 20 olives costs $1.50. How much change will Clive have when he buys what he needs?
He needs 4 jars of olives because 80 / 20 = <<80/20=4>>4
He will spend $6 because 4 x 1.5 = <<4*1.5=6>>6
He will have $4 in change because 10 - 6 = <<10-6=4>>4
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