Multiple choice

A clock gains 5 seconds for every 3 minutes. If the clock began working at 9 a.m., what time will it be in the wrong clock at 6 p.m. on the same day?

  1. 6:09

  2. 6:15

  3. 6:12

  4. 6:10
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The clock gains 5 seconds every 3 minutes, which is 100 seconds per hour. From 9 a.m. to 6 p.m. is 9 hours, so the clock gains 900 seconds, which equals 15 minutes. Thus, the clock shows 6:15.

Keep practicing — related questions