A can do a piece of work in 6 days of 15 hours each and B can do it in 4 days of 5 hours each. How long will they take to do I, working together 1.20 hours a days?

Options
- 2.20 days
- 2.23 days
- 2.25 days
- None

CORRECT ANSWER : None

Discussion Board
Answer :

A take - 6 Day - 15hr.
B take - 4 Day - 5hr.
How many days invest to complete whole work while working for 1.2 hr. In a day.

A - 1 Day - 1/6×15 amt. Of work
B - 1 Day - 1/4×5 amt. Of work

A+ B''together1day = 1/ K Days× 1.2

1/6×15 + 1/4×5 = 1/k × 1.2
K = 13 days.

Mini pandey 07-27-2021 09:51 PM

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