Question
PSLE
First 4 sandwiches: $1 each
Additional sandwiches: 90¢ each.

Simon has $9. What is the greatest number of sandwiches he can buy?
2 m

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PSLE
First 4 sandwiches: $1 each
Additional sandwiches: 90¢ each.

Simon has $9. What is the greatest number of sandwiches he can buy?