Answer:
180 minutes. Or, 3 hours.
Step-by-step explanation:
An hour has 60 minutes, you have to divide that by 4. That's 15.
So, they tell you that Bruce reads 3/4 hour. 15 is 1/4. So, to have 3/4, you have to multiplicate 15x3, that is 45.
Now you have the time Bruce reads every night; 45 minutes.
And they ask you how many time will he read in four nights.
So you will multiplicate again, 45x4 (45 minutes x 4 nights), with the final result: 180.
That is, in hours, 3.
(180/60)
