Question
A,B and C run around a Circular track starting from the
same point simultaneously and in the same direction at the speed of 8 kmph, 12 kmph and 16 kmph respectively. If the length of the track is 800 metre, when will A, B and C meet at the starting point for the first time after they start the race?Solution
8km = 8000 m A makes it around the track 10 times (8000/800) in an hour Similarly B = 15 times and C = 20 times in an hour In 60 minutes, A will complete track once every 6 minutes, B once every 4 minutes and C once every 3 minutes LCM of A,B,C = LCM(6,4 & 3)= 12 Alternative: Time = Distance/Speed Time for A = 0.8/8 hours Time for B = 0.8/12 hours Time for C = 0.8/16 hours LCM of A,B,C = (LCM of numerator)/(HCF of Denominator) = (LCM of 0.8,0.8,0.8)/(HCF of 8,12,16) = 0.8/4 hours 0.8/4 hours = 12 minutes
Select the option that will replace the question mark (?) in the following number series.
456, 444, 420, 384, 336, ?
Find the odd one out.
Statement:
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Select the option that is related to the fifth letter-cluster in the same way as the second letter-cluster is related to the first letter-cluster and th...
How will "Never Out Keep" be coded in the given language?
Odd one out
In a certain code, VANILLA is written as XXPFNIC. How is CARPENTER written in that code?
One day, Anamika leaves her office and walks 30m towards east. She then turned right and walks 30m, and then she again turned right and walks 15m. From ...
112 is related to 14 following a certain logic. Following the same logic, 176 related to 22. To which of the following is 200 related, following the sam...
Statements: R > T = H > E, N ≤ W > S > T
Conclusion:
I. T ≤ N
II. W > E
