• 3:45 a.m.

  • 4:10 a.m.

  • 4:15 a.m.

  • 4:30 a.m.


Duration from 12 noon to 4:00 a.m. = 16 hours. Time gained in 24 hours = 15 min. Time gained in 16 hours = (5/24 ├Ч 16) min = 10 min.

A watch is 1 minute slow at 1 p.m. on Tuesday and 2 minutes fast at 1 p.m. on Thursday. When did it show the correct time?

A watch which gains 5 seconds in 3 minutes was set right at 7 a.m. In the afternoon of the same day, When the watch indicated quarter past 4 O clock, the true time is

A watch which gains uniformly ,is 5 min,slow at 8 oclock in the morning on sunday and it is 5 min 48 sec.fast at 8 p.m on following sunday. when was it correct?

A watch which gains uniformly is 2 minutes low at noon on Monday and is 4 min. 48 sec fast at 2 p.m. on the following Monday. When was it correct?

A watch which gains uniformly is 2 minutes slow at noon on Sunday and is 4 min. 48 sec fast at 2 p.m. on the following Sunday. When it has shown the correct time ?

A watch, which gains uniformly, is 2 min, slow at noon on Saturday, and is 4 min 48 seconds fast at 3 p.m on the following Sunday when was it correct ?

A water tank has three taps A,B and C.Tap A, when opened, can fill the water tank alone in 4 h. Tap B, can fill the water tank alone in 6 h and tap C can empty the water tank alone in 3 h. If taps A, B and C are opened simultaneously. How long will it take to fill the tank completely?

A water tank is two-fifth full.Pipe A can fill a tank in 10 minutes and pipe B can empty it in 6 minutes.If both the pipes are open,how long will it take to empty or fill the tank completely?

A wholesaler sells 20 pens at the marked price (printed on the article) of 16 pens to a retailer. The retailer in turn sells them at the marked price . Determine the gain or loss per cent to the retailer.

A wholesaler sells toys at a profit of 20% to a retailer and retailer sells these toys to its customer at a profit of 25%. What is the profit percentage of the retailer?

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