I'll give you a question, please answer with step-by-step reasoning process.
Josie received $50 as a gift. She plans to buy two cassette tapes that cost $9 each and a headphone set that costs $25. How much money will she have left?

7
The cassette tapes will cost 2 × 9 = $18.

She spends 18 + 25 = $43 in total.

Josie will have 50 - 43 = $7 left.

.

So, the final answer is 7