Lalit ki ganit

एक बस बिना रुके 54 किमी/घंटे से चलती है। यदि उस बस के रुकने के समय को जोड़ लिया जाए तो ,उस बस की औसत गति 48 किमी/घंटे हो जाती है। ज्ञात कीजिए कि वह बस प्रति घंटे कितने मिनट के लिए रुकती होगी। A bus runs at 54 km/hr without stopping. If the stopping time of that bus is added, then the average speed of that bus becomes 48 km/hour. Find out for how many minutes per hour the bus will stop.

एक व्यक्ति स्थान A से स्थान B तक 28 किमी की दूरी 4 घंटे में तय कर लेता है। तथा स्थान B से स्थान C तक 35 किमी की दूरी 7 घंटे में तय कर लेता है।और स्थान C से स्थान D तक 42 किमी की दूरी 3 घंटे में तय कर लेता है। पूरी यात्रा में उसकी औसत चाल क्या होगी। A person covers a distance of 28 km from place A to place B in 4 hours. And it covers the distance of 35 km from place B to place C in 7 hours. And it covers the distance of 42 km from place C to place D in 3 hours. What will be his average speed in the entire journey?

एक व्यक्ति स्थान A से स्थान B तक 30 किमी की दूरी 15km/h से तय कर लेता है। तथा स्थान B से स्थान C तक 45 किमी की दूरी 9km/h से तय कर लेता है।और स्थान C से स्थान D तक 35 किमी की दूरी 5km/h से तय कर लेता है। पूरी यात्रा में उसकी औसत चाल क्या होगी। A person covers a distance of 30 km from place A to place B at 15km/h. And from place B to place C it covers a distance of 45 km at 9km/h. And from place C to place D it covers a distance of 35 km at 5km/h. What will be his average speed in the entire journey?

एक व्यक्ति स्थान A से स्थान B तक 24 किमी की दूरी 6 km/h से तय कर लेता है। तथा स्थान B से स्थान C तक 36 किमी की दूरी 4km/h से तय कर लेता है। पूरी यात्रा में उसकी औसत चाल क्या होगी। A person covers a distance of 24 km from place A to place B at 6 km/h. And covers distance of 36 km from place B to place C at 4km/h. What will be his average speed in the entire journey?

यदि मूल पाइप की त्रिज्या तीन चौथाई कर दी जाए तब टंकी भरने में 36 मिनट का समय लगता है, मूल पाइप से टंकी कितने समय में भर जाती रही होगी। If the radius of the original pipe is reduced to three-fourths, then it takes 36 minutes to fill the tank. How much time would it have taken to fill the tank with the original pipe?

If the radius of the original pipe is reduced to two-thirds then it takes 48 minutes to fill the tank. How much time would it have taken to fill the tank through the original pipe?

A perpendicular pipe takes 36 minutes to fill a tank, how much time will it take if a pipe of three-fourth its radius is filled.

A vertical pipe can fill a tank in 108 minutes. How much time will it take if a pipe with triple the radius fills the tank?

A long circular pipe can fill a tank in 54 minutes. If its radius is doubled, how much time will it take to fill the tank?

Tap A can fill a tank in 18 minutes, and tap B can empty the tank in 28 minutes. Both taps are operated alternately. How much total time will it take to fill the tank?

Tap A can fill a tank in 48 minutes, and tap B can empty the tank in 54 minutes. Both taps are operated alternately. How much total time will it take to fill the tank? 4o

Tap A can fill a tank in 36 minutes, and tap B can empty the tank in 54 minutes. Both taps are operated alternately. How much total time will it take to fill the tank?

Tap A can fill a tank in 24 minutes. Pipe B can empty the tank in 54 minutes. Both are run alternately. How much time will it take to fill the tank?

Pipe A can fill a tank in 45 minutes, and Pipe B can empty the same tank in 54 minutes. Both are operated alternately. How much time will it take to fill the tank?

Pipe A can fill a tank in 18 minutes, and Pipe B can fill the same tank in 24 minutes. Both were operated together, but it took 20 minutes to fill the tank. Upon inspection, it was found that there was a leak in the tank, which caused the extra time. How much time would have been saved if the leak had not been there?

Pipe A can fill a tank in 15 minutes, and Pipe B can fill the same tank in 20 minutes. Pipe C can empty the tank in 4 minutes. Pipes A and B are turned on for the first 5 minutes, and then Pipe C is also turned on. How much time will it now take for the tank to be completely filled or emptied? 4o

Pipe A can fill a tank in 18 minutes, and Pipe B can fill the same tank in 24 minutes. Pipe C can empty the tank in 3 minutes. Pipes A and B are turned on for the first 8 minutes, and then Pipe C is also turned on. How much time will it now take for the tank to be completely filled or emptied?