Martiza is studying for the citizenship test. There are 60 questions on the test. 30 are multiple-choice and 30 are fill-in-the-blank. It takes her 15 minutes to learn each multiple-choice question and 25 minutes each to learn the fill-in-the-blank questions. How many hours will she need to study before she is ready for the test?
The multiple-choice questions will take her a total of 30 * 15 = 
<gadget id="calculator">30*15</gadget>
<output>450</output>
450 minutes.
The fill-in-the-blank questions will take her a total of 25 * 30 = 
<gadget id="calculator">25*30</gadget>
<output>750</output>
750 minutes.
The test will take her a total of 450 + 750 = 
<gadget id="calculator">450+750</gadget>
<output>1_200</output>
1200 minutes to study for.
Therefore, Martiza will need to study a total of 1200 / 60 minutes = 
<gadget id="calculator">1200/60</gadget>
<output>20</output>
20 hours.

<result>20</result>