Question

55. A and B can complete the work individually
in 24 days and 30 days respectively, working
10 hours a day. Work is to be done in two
shifts. Morning shift lasts for 6 hours and
evening shift lasts for 4 hours. On the first
day A works in the morning shift while B
works in the evening shift. Next day A works
in the evening shift while B works in the
morning shift and so on. It means they work
alternatively with respect to their shifts.
Thus they work on this pattern till the work
is completed. On which day the work got
completed?​

Answer 1

Answer:

Day 28

Step-by-step explanation:

A completes the work in 24*10=240 hours, B- 30*10=300 hrs

A and B in two shifts (10 hours each) complete as much as 1/24 and 1/30 of work:

1/24+1/32=7/96 of work per 2 days

Work will be completed in (96/7)*2=27+ days i.e on day 28