The neighbor's dog barks at a squirrel every 15 minutes at night.
If he first barks at 10 p.m., when you're trying to fall asleep, how many times will he bark by 2 a.m., when you give up trying to sleep and decide to read a book instead?
- 16 times
- 132 times
- 17 times
- 15 times
Answer(s): C
Explanation:
The time between 10 p.m. and 2 a.m. is 4 hours or 240 minutes. Divide the total number of minutes in the time period by 15 minutes the interval that the dog barks. Then add 1 because the dog started barking at the beginning of the period: (240 ÷ 15) + 1 = 17.