Question
Oliver had 1 five-dollar note, 2 twenty-cent coins and 7 ten-cent coins left after buying a glowstick for $6.60. How much money did he had at first?
3 m

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Oliver had 1 five-dollar note, 2 twenty-cent coins and 7 ten-cent coins left after buying a glowstick for $6.60. How much money did he had at first?