self Maths Puzzle

the distance between veranasi and lucknow is 220km.two bus start from these towns towards each other.they can meet halfway if the first bus leaves 2 hrs earlier then the second.if they start simultaneously,they will meet in 4 hrs.find the speed of the buses.

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self Other Question

two boats go downstream from point x to point y.the faster boat covers the distance from x to y 1.5 times as fast as the slower boat.it sis known that for every hour the slower boat lags behind the faster boat by 8 km.however,if they go upstream,then the faster boatcovers the distance from y tox in half thetime as the slower boat.find the speed of faster boat in still water. out of a pack of 52 cards one is lost,from the remainder of the pack,two cards are drawn and found to be spades.find the chance that the missing card is a spade.