Question
Lynn baked blueberry, strawberry and durian tarts. There were one-third as many durian tarts as strawberry tarts and an equal number of durian tarts as blueberry tarts. The cost of each tart is given as shown.

1 durian tart: $1.50
1 strawberry tart: $1.20
1 blueberry tart: $1.90

If she collected $231 from selling all the tarts, how many strawberry tarts were there?
3 m

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Lynn baked blueberry, strawberry and durian tarts. There were one-third as many durian tarts as strawberry tarts and an equal number of durian tarts as blueberry tarts. The cost of each tart is given as shown.

1 durian tart: $1.50
1 strawberry tart: $1.20
1 blueberry tart: $1.90

If she collected $231 from selling all the tarts, how many strawberry tarts were there?