Question

A can complete a certain work in 4 minutes, B in 5 mins, C in 6 mins, D in 10 min and E in 12 minutes. The average number of units of work completee by them per minute is??​

Answer 1

Answer:

Average = (1/4+1/5+1/6+1/10+1/12) / 5

(15+12+10+6+5)/60/5

38/60/5