Question

Kendra watched two movies. The first lasted 100 min. the second lasted 1 hour, 55 min. Which movie was longer? By how many min.?

Answer 1

Firs movie was 100min
Second movie was 1h and 55min
1h is 60min
So 60+55=115
Ans:second movie was longer by 15min

Answer 2

*FM: 100 min

*SM: 1 h 55 min -------------> 115 min

$1 h * \frac{60 min}{1 h} = 60 min$

60 + 55 = 115 min

Second movie was longer by 15 min