Farah spent $13 on 4 items from the snack stand at the airport. The
snack stand charges $7 per
sandwiches and $2 per bags of
snack mix. It she purchased a
combination of sandwiches and
snack mix bags, how many of each
food item did Farah purchase?

Farah bought 1 sandwich which cost $7 and three snack mix bags which also cost (2 + 2 + 2)$

2+2+2+7=$13

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relating to or denoting a system of numbers and arithmetic based on the number ten, tenth parts, and powers of ten.

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