Question
One watermelon cost 2 times as much as one passion fruit. Mrs Zhang bought 3 watermelons and 4 passion fruits for $20.90. How much would 9 watermelons and 5 passion fruits cost? Express the answers to 2 decimal places.
3 m

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One watermelon cost 2 times as much as one passion fruit. Mrs Zhang bought 3 watermelons and 4 passion fruits for $20.90. How much would 9 watermelons and 5 passion fruits cost? Express the answers to 2 decimal places.