Verified Answer :

HarborMaster

Let us see if I understand the question:

3 cans of green beans cost $1.80 retail but (a man bought) 9 cans of green beans how much did he pay
?

Well, $1.80 divided by 3 = $0.60 per can

and, 9 cans cost $0.60 per can.    9 times $0.60 = $5.40

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