Dan rented two movies to watch last night. The first was 1 hour 40 minutes long, the second 1 hour 50 minutes long. How much time did it take for Dan to watch the two videos?
a. 4.5 hours
b. 3.5 hours
c. 2.5 hours
d. 1.5 hours
Answer: b. 3.5 hours
Change the hours to minutes: 1 hour 40
minutes = 100 minutes; 1 hour 50 minutes =
110 minutes. Now add: 100 minutes + 110
minutes = 210 minutes. Now change back
to hours and minutes: 210 minutes ÷ 60 =
3.5 hours.
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