Question
One durian cost 3 times as much as one apple. Mrs Zhang bought 3 durians and 2 apples for $14.40. How much would 9 durians and 6 apples cost? Express the answers to 2 decimal places.
3 m

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One durian cost 3 times as much as one apple. Mrs Zhang bought 3 durians and 2 apples for $14.40. How much would 9 durians and 6 apples cost? Express the answers to 2 decimal places.