Discussion Forum



1)

Anoop's watch, which gains uniformly, is 2 minutes slow at noon on Sunday, and is 4 minutes and 48 seconds fast at 2 p.m. on the following Sunday. When was it correct?


A) 3 p.m on Wednesday

B) 2.p.m on Monday

C) 2.p.m on Tuesday

D) 3 p.m on Friday

Answer:

Option C

Explanation:

Time from 12 p.m. Sunday to 2 p.m on the following Sunday = 7 days 2 hours = 170 hours.

There for the Watch Gains 2+(4(48/60))=2+(4(4/5))=(34/5) min in 170 hours.

(34/5) min is gained in 170 hours.

There for, 2 min is gained in 170 x (5/34) x 2=50 hrs.

.'. The watch is correct after 2 days 2 hrs (i.e) at 2 p.m on Tuesday.