A, B and C individually can do a work in 10 days, 12 days and 15 days respectively. If they start working together, then the number of days required to finish the work is :
A, B and C individually can do a work in 10 days, 12 days and 15 days respectively. If they start working together, then the number of days required to finish the work is :
[A]2 days
[B]4 days
[C]8 days
[D]16 days
4 days
Work done by A, B and C in 1 day $latex \frac{1}{10}+\frac{1}{12}+\frac{1}{15} = \frac{6+5+4}{60}&s=1$
$latex = \frac{15}{60} = \frac{1}{4}&s=1$
∴ Required Time = 4 days.
Hence option [B] is correct answer.