A clock gains 5 minutes every 24 hours. It is set correctly at 12:00 noon on Monday. What true time will it be when the clock indicates 6:00 PM on the following Wednesday?
Answer and explanation
Correct answer: D.
Wait, gain. So true time is .
- Step 1: From Monday 12:00 noon to Wednesday 6:00 PM is of indicated clock time.
- Step 2: In 24 hours, the clock covers ? No: 5 min is hour, so h.
- Step 3: clock hours true hours clock hour true hours.
- Step 4: For 54 clock hours: True time .
Answer
.
Why not the others: assumes a flat 10-minute gain; subtracts only 5 minutes; and overestimates the time gain.
Practise more Puzzles, series and critical deduction.
Free questions with an explanation for every one, and full timed CUET UG mock tests.
More Puzzles, series and critical deduction questions
- Six persons A, B, C, D, E, and F sit around a circular table facing the center. A sits opposite D. B sits immediately to the right of A. E s…
- In a certain code, ROSE is written as 6821, CHAIR is written as 73456, and PREACH is written as 961473. What is the…
- Complete the analogy: ACEG : BDFH :: IKMO : ?
- Statements: (1) Some books are pens. (2) Some pens are pencils.
Conclusions:
I. Some books are pencils.
II. No book is a pencil.
Which optio… - Find the missing number in the series: ?
- If a conventional 12-hour analog clock shows the time as , what time does its reflection in a vertical plane mirror show?