Jeff orders a Halloween costume. He has to put in a 10% deposit and then pay the rest when he picks it up. The costume is 40% more expensive than last year's costume, which cost $250. How much did he pay when picking it up, in dollars?
Think hard. Detailed solution:
315
It cost 250 *.

4 = $100 more than his old costume.

So it cost 250 + 100 = $350.

He left a 350 *.

1 = $35 deposit.

So he had to pay 350 - 35 = $315.

.

So, the final answer is 315