Question
A train has to cover a distance of 210 km in 14 hours.
If it covers half journey in 4/7th time, then the speed of covering the remaining distance in the time left has to be:Solution
Speed = Distance/time = 210/14 = 15 km/hr According to the question, New time = 4/7 x 14 = 8 hrs New distance = 1/2 x 210 = 105 km Required speed = Distance left/Time left = 105/6 = 17.5 km/hr
If the sum of 2 numbers is 185, their LCM is 1700 and HCF is 5. Then the difference between 2 numbers is:
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Two men started moving in a circular path from the same place at the same time in the same direction. If they complete one revolution in 12 min and 16 m...
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HCF of two numbers = 12, LCM = 660, one number = 60. Find the other.
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