Jose arrives at Barney's Burger Barn at 7:30 pm. How much time remains before it closes?

• A. 1 hour
• B. 1 hour 45 minutes
• C. 1 hour 30 minutes
• D. 2 hours

Answer: (C)

You’re finding how much time remains by subtracting the arrival time from the closing time. If it closes at 9:00 pm, subtract 7:30 pm from 9:00 pm. From 7:30 to 8:30 is 1 hour, and from 8:30 to 9:00 is 30 minutes, so the total remaining time is 1 hour and 30 minutes. So the restaurant has 1 hour 30 minutes left before closing. If it were 1 hour, closing would be at 8:30; 1 hour 45 minutes would be 9:15; 2 hours would be 9:30.