john can type 20 page document 40 min and asscab 30 min and jack 24working together how long does it tack

Question

40Min and 30 min and 24 min how long long does it tack then working gether

Answer 1

Interpretation: John takes 40 min, Asscab 30 min and Jack 24 min to type a 20-page document each, working alone. How long does it take if they all work together?

John completes a page in 2 mins, Asscab in 1.5 mins, Jack 1.2 mins. Three pages would be completed in 4.7 minutes, so 20 pages would be completed in 4.7*20/3=94/3=31 1/3 minutes (31 mins 20 seconds).