Question
One jackfruit cost 3 times as much as one mango. Mrs Zhang bought 4 jackfruits and 3 mangoes for $31.20. How much would 8 jackfruits and 9 mangoes cost? Express the answers to 2 decimal places.
3 m

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One jackfruit cost 3 times as much as one mango. Mrs Zhang bought 4 jackfruits and 3 mangoes for $31.20. How much would 8 jackfruits and 9 mangoes cost? Express the answers to 2 decimal places.