Question
A kiosk has a special offer for cans of tuna.

1 can for $4

SPECIAL OFFER:
2 cans for $7

Billy has $18. What is the greatest number of cans of tuna he can buy?
4 m

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A kiosk has a special offer for cans of tuna.

1 can for $4

SPECIAL OFFER:
2 cans for $7

Billy has $18. What is the greatest number of cans of tuna he can buy?