Question
A train is travelling at the rate of 36 km/hr. How many
seconds it will take to cover a distance of 4/5 km?Solution
Speed of train = 36 km/hr Speed of train in (m/sec) = 36 x 5/18 = 10 m/sec Distance = 4/5 of 1 km = 4/5 x 1000 m = 800 m Therefore, Speed = distance/time 10 = 800/t Time = 800/10 = 80 sec
If the numerator of a fraction is increased by 300% and the denominator is increase by 600%.The resultant fraction is 1/2. What was the original fraction?
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