Tilly needs to sell 100 bags at $10 per bag to make $300 in profit. How much did she buy each bag for?
Tilly will make 100 x $10 = $
<gadget id="calculator">100*10</gadget>
<output>1_000</output>
1000 in total.
She has spent $1000 - $300 = $
<gadget id="calculator">1000-300</gadget>
<output>700</output>
700 on 100 bags.
Each bag cost Tilly $700 / 100 = $
<gadget id="calculator">700/100</gadget>
<output>7</output>
7.

<result>7</result>