Answer the following question, with explanation first.
If Joe spent 1/9 of his pocket money of $450 on chocolates and 2/5 on fruits, how much money does he have left?

220
Joe spent 1 / 9 * $450 = $50 on chocolate.

Joe spent 2 / 5 * $450 = $180 on fruits.

Joe has $450 - $50 - $180 = $220 left.

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So, the answer is 220