Question

A can do a piece of work in 6 days b takes 8 days c takes as long as a and b would take woeking together how long will it take b and c to complete the work together

Answer 1

$a \: can \: do \: work \: in \: one \: day = \frac{1}{6} \\ b \: can \: do \: work \: in \: one \: day = \frac{1}{8} \\ a \: and \: b \: can \: work \: in \: one \: day \\ = \frac{14}{48} = \frac{7}{24} = \frac{1}{24 \div 7} \\ b \: and \: c \: together = \frac{1}{8} + \frac{7}{24} = \frac{10}{24} so \: \: b \: and \: finsh \: work = 2days \: 9 \: hour \: approximate$

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