The no. Of red balls in a bag is 10 more than the no. Of black balls. If the probability of drawing a red ball at random from the bag is 3/5 then the total no. Of balls in the bag is
An express train take 1 hour less than a passenger train to travel 132 km between Mysore and Bangalore if the average speed of the express train is 11 km per hour more than that of the passenger train find the oras speed of the two train
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