Question

You’re now preparing for tomorrow’s mega 9.5-hour livestream extravaganza. You want to determine how long you’ll actually be livestreaming for as you plan on taking 10-minute breaks every 2.5 hours.

The following expression represents the number of hours you’ll actually be livestreaming. Simplify the expression to determine the actual number of hours:

(9.5 x 60 - 9.5 / 2.5 x 10) / 60

Question 12 options:


8 2/5 hours


7 5/7 hours


8 13/15 hours


7 7/23 hours

Answer 1

Compute step-by-step:

9.5 × 60 = 570
9.5 ÷ 2.5 = 3.8, and 3.8 × 10 = 38
570 − 38 = 532 minutes
532 ÷ 60 = 133/15 = 8 13/15 hours

Answer: 8 13/15 hours.