Nate got lost looking for his car in the airport parking lot. He had to walk through every row in Section G and Section H to find it. Section G has 15 rows that each hold 10 cars. Section H has 20 rows that each hold 9 cars. If Nate can walk past 11 cars per minute, how many minutes did he spend searching the parking lot?
First find the number of cars in Section G by multiplying the number of rows by the number of cars per row: 15 rows * 10 cars/row = 
<gadget id="calculator">15*10</gadget>
<output>150</output>
150 cars.
Then do the same thing for Section H: 20 rows * 9 cars/row = 
<gadget id="calculator">20*9</gadget>
<output>180</output>
180 cars.
Then add the two quantities of cars to find the total number of cars Nate walked past: 150 cars + 180 cars = 
<gadget id="calculator">150+180</gadget>
<output>330</output>
330 cars.
Finally, divide the number of cars Nate passed by the numbers he passes each minute to find how long he spent searching: 330 cars / 11 cars/minute = 
<gadget id="calculator">330/11</gadget>
<output>30</output>
30 minutes.

<result>30</result>