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Start learning 50% faster. Sign in nowLet the speed of the man be lsquo;xrsquo; m/sec. Speed of train = 1260/21 = 60 m/sec Relative speed of the train = (60 ndash; x) m/sec According to the question, =gt; (60 ndash; x) = 1260/30 =gt; x = 60 ndash; 42 =gt; x = 18 Therefore the speed of the man = 18 m/sec
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‘A’ can do 30% of the work in 12 days. ‘B’ can do the whole work in 50 days. Find the time taken by them together to do 75% of the work.
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A and B together can complete a piece of work in 25 days while A alone can complete 50% of the work in 50 days. Find the time taken by B to compl...
114 unit of work can be completed by P alone in 19 days. P started working alone and joined by Q after 10 days such that they completed the remaining wo...
