Samanta is planning a party for her friend Marta. She decided to raise some money among the guests she invited, to buy Marta a gift. Every participant gave Samanta $5 for this purpose and she herself put in $10. The gift cost was lower than expected, so there was $15 leftover. What was the price of the gift, if there were 12 guests invited?
From all the guests Samanta got $5/guest * 12 guests = $
<gadget id="calculator">5*12</gadget>
<output>60</output>
60.
Including money Samanta put herself, she had $60 + $10 = $
<gadget id="calculator">60+10</gadget>
<output>70</output>
70.
The cost of the gift was $70 - $15 = $
<gadget id="calculator">70-15</gadget>
<output>55</output>
55.

<result>55</result>