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The light in a restroom operates with a 15-minute timer that is reset every time the door opens as a person goes in...

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by VJesus12 » Sat Sep 25, 2021 2:39 am

Timer

00:00

Answers

A

B

C

D

E

Stats

Difficulty—

table.jpg
The light in a restroom operates with a 15-minute timer that is reset every time the door opens as a person goes in or out of the room. Thus, after someone enters or exits the room, the light remains on for only 15 minutes unless the door opens again and reset the timer for another 15 minutes. If the times listed above are the times at which the door opened from 8:00 to 10:00, approximately how many minutes during this two-hour period was the light off?

A. 10
B. 25
C. 35
D. 40
E. 70

Answer: B

Source: Official Guide
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