Question
One king melon cost 2 times as much as one orange. Mrs Zhang bought 3 king melons and 4 oranges for $19.80. How much would 9 king melons and 6 oranges cost? Express the answers to 2 decimal places.
3 m

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One king melon cost 2 times as much as one orange. Mrs Zhang bought 3 king melons and 4 oranges for $19.80. How much would 9 king melons and 6 oranges cost? Express the answers to 2 decimal places.