A truck driver has to spend $2 per gallon of gas. She can drive 10 miles per gallon. She drives at a rate of 30 miles per hour. If she is paid $.50 per mile, how much money does she make if she drives for 10 hours?
The truck driver drives for 10 hours at 30 miles per hour, so she drives 10*30=
<gadget id="calculator">10*30</gadget>
<output>300</output>
300 miles.
Therefore, she needs 300/10=
<gadget id="calculator">300/10</gadget>
<output>30</output>
30 gallons of gas.
This will cost her 30*$2=$
<gadget id="calculator">30*2</gadget>
<output>60</output>
60.
She will make 300*$.50= $
<gadget id="calculator">300*.50</gadget>
<output>150</output>
150.
Thus, after paying for gas, she will make $150-$60=$
<gadget id="calculator">150-60</gadget>
<output>90</output>
90.

<result>90</result>