Rachel is writing an essay.  She writes 1 page every 30 minutes.  She spends 45 minutes researching the topic.  She writes a total of 6 pages.  Then she spends 75 minutes editing her essay.  Altogether, how many hours did she spend completing the essay?
She spends this long researching and editing her essay 45 min + 75 min = <T>add(45, 75)=120 min.
Converting the minutes to hours for researching and editing is 120 / 60 = <T>divide(120, 60)=2.0 hours.
She spends this long writing the essay 6 x 30 min = <T>multiply(6, 30)=180 min.
Converting the minutes to hours for writing the essay is 180 / 60 = <T>divide(180, 60)=3.0 hours.
The total hours Rachel spends completing the essay is 2 + 3 = <T>add(2, 3)=5 hours.
