a train runs first half of the distance at 40 km/hr and the remaining half at 60 km/hr. What is the average speed for the entire journey?
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3 machines can complete the work in 4,5, and 6 hours respectively. due to power failures they did the work alternatively. Then what is time taken to complete the work?
A person has Rs 100/- in his pocket, he can as 25 pencils or 15books.He kept 15% of the money for travelling expenses and purchased 5 pencils.So how many books he can purchase with the remaining money. a) 4 b) 3 c) 5 d)none
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The LCM of two numbers is 24. The GCF is 4. One number is 4 more than the other. What are the numbers.
Three taps A, B and C can fill a tank in 12, 15 and 20 hours respectively. If A is open all the time and B and C are open for one hour each alternately. Then the tank will be full in:
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One Train Travels 200m From A To B With 70 Km/Ph And Returns To A With 80kmph, What Is The Average Of Their Speed?
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3 : 4 :: 6 : ? a)30 b)25 c)15 d)11
If a train covers 600m in 0.5 seconds, how long it will cover in 10 seconds?
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