Question

A b and c can complete a piece of work in 10 12 and 15 days of b stops after 2 days

Answer 1

complete the question

Answer 2

$a \: \: can \: do \: work \: in \: one \: day = \frac{1}{10} \\ similarly \: \: b \: \: can \: do = \frac{1}{12} \\ c \: \: can \: do = \frac{1}{15} \\ a \: \: b \: \: c \: \: can \: do \:work \: in \: one \: dy \\ > \frac{6 + 5 + 4}{60} = \frac{15}{60} = \frac{1}{4} \\ a \: b \: \: c \: \: can \: do \: work \: in \: two \: days \\ = \frac{2}{4} = \frac{1}{2} \\ remaining \: work = \frac{1}{2} \\ a \: \: c \: \: can \: do \: a \: work \: in \: one \: day \\ = \frac{3 + 2}{30} = \frac{1}{6} \\ so \: a \: and \: c \: can \: complete \: remaining \: work \\ = \frac{1}{2} \times 6 = 3 \: days$