A can build a wall in the same time in which b and c together can do it. if a and b together could do it in 25 days and c alone in 35 days, in what time could b alone do it?
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1/A = 1/B + 1/C........... 1
1/A + 1/B = 25.......... 2
1/C = 35..................... 3
Solving we get,
A = 1/30
B = -1/5
hence B will build wall on its own in -5 Days
i. e. B actually can not build wall, moreover he is reducing the performance of other by working together.
1/A + 1/B = 25.......... 2
1/C = 35..................... 3
Solving we get,
A = 1/30
B = -1/5
hence B will build wall on its own in -5 Days
i. e. B actually can not build wall, moreover he is reducing the performance of other by working together.
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