LIVE Course for free

Rated by 1 million+ students
Get app now
JEE MAIN 2023
JEE MAIN 2023 TEST SERIES
NEET 2023 TEST SERIES
NEET 2023
CLASS 12 FOUNDATION COURSE
CLASS 10 FOUNDATION COURSE
CLASS 9 FOUNDATION COURSE
CLASS 8 FOUNDATION COURSE
0 votes
61 views
in Reasoning by (110k points)
closed by
A clock is set to the right time at 4:00 AM on Thursday. If it gains 20 seconds in every 3 hours, then what is
the time shown on the clock at 8:30 PM on Friday night?
1. 8 hours 34 minutes PM
2. 9 hours 34 minutes PM
3. 8 hours 34 minutes 30 seconds PM
4. 8 hours 30 minutes 30 seconds PM
5. None

1 Answer

0 votes
by (59.9k points)
selected by
 
Best answer
Correct Answer - Option 3 : 8 hours 34 minutes 30 seconds PM

No. of hours between 4:00 AM on Thursday and 8:30 PM on Friday = 40 hours and 30 minutes

Gain in 3 hours = 20 seconds

Therefore, gain in 1 hour = 20/3 seconds

⇒ gain in 40.5 hours = 270 seconds = 4 minutes 30 seconds

Therefore, the time shown = 8:30 + 4 minutes 30 seconds

Hence, '8 hours 34 minutes 30 seconds PM' is the correct answer.

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...