Question
One king melon cost 3 times as much as one mangosteen. Mrs Zhang bought 2 king melons and 4 mangosteens for $15.40. How much would 8 king melons and 5 mangosteens cost? Express the answers to 2 decimal places.
3 m

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One king melon cost 3 times as much as one mangosteen. Mrs Zhang bought 2 king melons and 4 mangosteens for $15.40. How much would 8 king melons and 5 mangosteens cost? Express the answers to 2 decimal places.