84 hours is equal to how many days and hours?

• A. 3 days 0 hours
• B. 3 days 12 hours
• C. 4 days 12 hours
• D. 2 days 12 hours

Answer: (B)

Think in terms of how many hours fit in a day. There are 24 hours in a day, so to express 84 hours as days and hours, divide by 24 and use the remainder as hours.

84 ÷ 24 = 3 with a remainder of 12. So it’s 3 days and 12 hours. Quick check: 3×24 = 72, and 72 + 12 = 84.

For comparison, 4 days would be 96 hours (too many), 3 days 0 hours is 72 hours, and 2 days 12 hours is 60 hours, none equal 84.