Question

A wall clock moves 10 minutes fast in every 24 hours. The clock was set right to show the correct time at 8:00 a.m. on Monday. When the clock shows the time 6:00 p.m. on Wednesday, what is the correct time?

(a) 5:36 p.m.

(b) 5:30 p.m.

(c) 5:24 p.m.

(d) 5:18 p.m.

Answer 1

Correct option is (a) 5:36 p.m.

In each hour clock moves fast by = \(\frac{10}{24}\) minutes

Number of hours between 8:00 am on monday and 6:00 pm on wednesday = 58 hours.

So, clock will move fast in 58 hours.

\(= 58 \times \frac{10}{24}\)

= 24.16 minutes

So, current time = 6 hr - 24.16 minutes

\(\approx\) 5:36 pm.