For the following questions answer them individually
Two trains running in opposite directions on parallel tracks, at speeds of 42 km/h and 57 km/h, take 18 seconds to cross each other. If the length of one train is 270 m,then the length of the other train is:
A sum of money becomes ₹35,680 after 3 years and ₹53,520 after 6 years at a certain rate percentage p.a., interest compounded yearly. What is the compound interest on the same sum in the first case? (Your answer should be nearest to an integer)
Pipes A, B and C together can fill a cistern in 12 hours. All the three pipes are opened together for 4 hours and then C is closed. A and B together take 10 hours to fill the remaining part of the cistern. C alone will fill two-thirds of the cistern in:
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The number of workers in the factory whose daily wages are ₹450 or more but less than ₹600 is
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Total production of wheat in states A, B and E is what percentage less than the total production of rice in states C, D and E?
D is a point on the side BC of a $$\triangle$$ABC such that $$\angle ADC = \angle BAC$$. If CA = 10 cm and BC = 16 cm then the length of CD is:
The average weight of some students in a class was 60.5 kg. When 8 students, whose average weight was 65 kg, joined the class, then the average weight ofall the students increased by 0.9 kg. The numberofstudentsin theclass,initially, was:
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The ratio of the total production of rice in states C and to the total production of wheat in states B and is ......
Pipes A, B and C can fill a tank in 10, 15 and 30 hours, respectively. D is an emptying pipe which alone can empty the full tank in x hours. A, B and C are opened together for 3 hours and then closed. Now D is opened which alone empties the tank in 30 hours. What is the value of x ?