If x can finish a job in 4 hours and y can finish the same job in 8 hours independently, then they together will finish the job in :
If x can finish a job in 4 hours and y can finish the same job in 8 hours independently, then they together will finish the job in :
[A]120 minutes
[B]140 minutes
[C]150 minutes
[D]160 minutes
160 minutes
(x + y)’s 1 day’s work $latex = \frac{1}{4}+\frac{1}{8} = \frac{2+1}{8} = \frac{3}{8}&s=1$
∴ Required Time $latex = \frac{8}{3}\ hours&s=1$
$latex = \left ( \frac{8}{3}\times 60 \right )\ minutes&s=1$
$latex = 160\ minutes$
Hence option [D] is correct answer.
