Question
A stall has a special offer for cans of longans.

1 can for $4

SPECIAL OFFER:
2 cans for $7

Andy has $39. What is the greatest number of cans of longans he can buy?
4 m

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A stall has a special offer for cans of longans.

1 can for $4

SPECIAL OFFER:
2 cans for $7

Andy has $39. What is the greatest number of cans of longans he can buy?