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What is the correct answer?

4

A watch which gains uniformly, is 6 min. slow at 8 o'clock in the morning Sunday and it is 6 min. 48 sec. fast at 8 p.m. on following Sunday. When was it correct?

A. at 20 min. past 7 p.m. on Wednesday.

B. at 35 min. past 7 p.m. on Wednesday.

C. at 50 min. past 7 p.m. on Wednesday.

D. at 24 min. past 7 p.m. on Wednesday.

Correct Answer :

A. at 20 min. past 7 p.m. on Wednesday.


Time from 8 a.m. on Sunday to 8 p.m. on following Sunday = 7 days 12 hours = 180 hours


The watch gains (5 + 29/5) min. or 54/5 min. in 180 hrs.


Now 54/5 min. are gained in 180 hrs.


5 min. are gained in (180 x 5/54 x 5) hrs. = 83 hrs 20 min. = 3 days 11 hrs 20 min.


Watch is correct 3 days 11 hrs 20 min. after 8 a.m. of Sunday.


It will be correct at 20 min. past 7 p.m. on Wednesday.

Related Questions

What is the correct answer?

4

A watch which gains uniformly, is 6 min. slow at 8 o'clock in the morning Sunday and it is 6 min. 48 sec. fast at 8 p.m. on following Sunday. When was it correct?

A. at 20 min. past 7 p.m. on Wednesday.

B. at 35 min. past 7 p.m. on Wednesday.

C. at 50 min. past 7 p.m. on Wednesday.

D. at 24 min. past 7 p.m. on Wednesday.

What is the correct answer?

4

At what time between 4 and 5 o'clock will the hands of a clock be at right angle?

A. at 32/11 min. past 4.

B. at 32/11 min. past 4.

C. at 35/11 min. past 4.

D. at 40/11 min. past 4.

What is the correct answer?

4

A clock is set right at 6 a.m. The clock loses 16 minutes in 24 hours. What will be the true time when the clock indicates 10 p.m. on 4th day?      

A. 10 p.m.

B. 11 p.m.

C. 911 p.m.

D. 12 p.m.

What is the correct answer?

4

Find at what time between 8 and 9 o'clock will the hands of a clock being the same straight line but not together.

A. at 120/11 min.

B. at 122/11 min.

C. at 127/11 min.

D. at 130/11 min.

What is the correct answer?

4

At what time between 2 and 3 o'clock will the hands of a clock be together?

A. 123/11 min. past 2.

B. 120/11 min. past 2.

C. 120/10 min. past 2.

D. 127/11 min. past 2.

What is the correct answer?

4

At what time between 5 and 6 o'clock are the hands of a clock 3minapart?

   

A. at 344/11 min. past 5.

B. at 346/11 min. past 5.

C. at 348/11 min. past 5.

D. at 349/11 min. past 5.

What is the correct answer?

4

A clock is set right at 8 a.m. The clock gains 10 minutes in 24 hours will be the true time when the clock indicates 1 p.m. on the following day?


 

A. 38 min. past 12.

B. 40 min. past 12.

C. 48 min. past 12.

D. 50 min. past 12.

What is the correct answer?

4

Find the angle between the hour hand and the minute hand of a clock when 3.25.

A. 47*1/2°

B. 48*1/2°

C. 49*1/2°

D. 50*1/2°