Discussion Forum



1)

A clock which uniformly loses 5 minutes in a day is set to show the correct time at 4:30 a.m on a Monday. What will be the correct time, when the clock shows 4 hours 17 minutes 30 seconds on the subsequent Wednesday evening?


A) 5:30 p.m

B) 6:30 p.m

C) 4:30 p.m

D) 7:30 p.m

E) 8:30 p.m

Answer:

Option C

Explanation:

The time shown by the clock is 4 hours 17 minutes 30 seconds (or) 4:17.5 hours.
Counting the number of minutes in between 4:30 a.m. on Monday to 4:17.5 p.m. on Wednesday. We have 3587.5 minutes. Also, it is given that the clock loses 5 minutes in a day.
=> for every 1440 minutes the clock loses 5 minutes or
it covers 1435 minutes.
.'. For 1435 minutes 1440 is the original time

for 3587.5 minutes (1440 x 3587.5)/1435 = 3600.

3600 minutes equals to 60 hours.
.-.60 hours after 4:30 a.m. on Monday is 4:30 p.m. on
Wednesday.