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Start learning 50% faster. Sign in nowLet the work ‘A’ and ‘B’, can do in 1 day be ‘a’ units and ‘b’ units, respectively. Let they takes ‘p’ days to build the wall, together Therefore, Total work = (a + b) × p units …….. (1) According to the question, Time taken by ‘A’ to build the wall alone = 1.45p days Therefore, total work = 1.45p × a units….. (2) From equation (1) and (2), we get 20b/9 = a Therefore, total work to be done = (a + b) × p = 29bp/9 units Time taken by 'B' to build the wall = 29bp/9b = 29p/9 days Therefore, required percentage = (29p/9 – p)/p} × 100 = 222.22% more time
If A + B means B is father of A and A % B means A is brother of B, A # B means B is husband of A. Which of the following shows that M is daughter in law...
‘A + B’ means 'A is mother of B’, ‘A – B’ means 'A is brother of B', ‘A ÷ B’ means 'A is father of B’, ‘A × B’ means 'A is h...
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