Question

A watch which gains $5$ seconds in every $3$ minutes is set right at $6$ a.m. What is the true time in the afternoon of the same day when the watch indicated $3:15$ p.m.?

• A. 3:00 pm
• B. 3:05 pm
• C. 3:10 pm
• D. 3:07 pm

Answer 1

The correct option is A 3:00 pm

The watch gains 100 sec in 1 hour

Correct watch False watch

6 : 00 6 : 00 (set right)

7 : 00 7 : 100

8 : 00 8 : 200

9 : 00 9 : 300

10 : 00 10 : 400

11 : 00 11 : 500

12 : 00 12 : 600

1 : 00 1 : 700

2 : 00 2 : 800

3 : 00 3 : 900 i.e Quarter pasts 3

So correct time = 3 pm