Mr Lee bought 3x bags of sugar and 4y bags of rice .Mr tan bought twice the amount of sugar but half the amount of rice .A bag of rice weight 5kg and was 2 and ahalf times as heavy as a bag of sugar . 1 kilogram of sugar cost $1.10 and 1 kilograms of rice cost 10 cent more than that of the sugar .How much more did Mr Lee spend compared to Mr Tan?
kailun
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