1.

P can complete a work in 12 days working 8 hours a day. Q can complete the same work in 8 days working 10 hours a day. If both P and Q work together, working 8 hours a day, in how many days can they complete the work?1). 60/112). 61/113). 71/114). 72/11

Answer»

P can complete the work in (12 × 8)hrs. = 96 hrs.

Q can complete the work in (8 × 10)hrs. = 80 hrs.

 P's 1 hour's work = 1/96

Q's 1 hour's work = 1/80

(P + Q)'s 1 hour's work

1/96 + 1/80 = 11/480

So, both P and Q will finish the work in (480/11) hrs.

Number of days of 8 hours each = (480/11 × 1/8) = 60/11 days


Discussion

No Comment Found

Related InterviewSolutions