Cid owns a mechanic shop, he charges $20 for an oil change, $30 for a repair, and $5 for a car wash. How much money did he earn if he changed the oil of 5 cars, repaired 10 cars, and washed 15 cars?
The money he earned from an oil change is $20 x 5 =$ 
<gadget id="calculator">20*5</gadget>
<output>100</output>
100.
The money he earned from the repair is $30 x 10 = $
<gadget id="calculator">30*10</gadget>
<output>300</output>
300.
The money he earned from the car wash is $15 x 5 = $
<gadget id="calculator">15*5</gadget>
<output>75</output>
75.
Therefore, Cid earned a total of $100 + $300 + $75 = $
<gadget id="calculator">100+300+75</gadget>
<output>475</output>
475.

<result>475</result>