Jake went to the movies. His mom dropped him off at 6:30 pm and picked him up at 8:50 pm. How long was Jake at the movies? A. 3 hours and 20 minutes
B. 2 hours and 20 minutes
C. 2 hours and 40 minutes
D. 1 hour and 20 minutes

8:50 -
6:30

= 2:20

2 hours and 20 minutes

Option B is correct

When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates. if you have a multiple-unit rate such as 120 students for every 3 buses, and want to find the single-unit rate, write a ratio equal to the multiple-unit rate with 1 as the second term.