12 persons can finish .a piece of work in 15 days. In how many days will the same work be completed by 20 persons? (a)15 days (b) 9 days (c)30 days (d) 20 days
Answers
Answer:
Step-by-step explanation:
f A completes work in 30 days and B completes the same work in 20 days. If they work together, then in how many day will they complete their work?
Ad by Atlassian
Can you manually clear your next-gen Kanban board?
You can now. The new feature has the ability to clear "Done" issues with manual board clearing.
Learn More
21 Answers
C. S. Sharma
C. S. Sharma, Most viewed writer (Quora) for Puzzles and Trick Questions,
Answered Jul 26 2019 · Author has 7.5k answers and 4m answer views
Friends…!
A can complete the work in 30 days, thus in one day A can do = 1/30th part of work
B can do this work in 20 days, thus in one day B can do =1/20th part of work
Both A and B work together then they can do part of work
1/30 + 1/20
(2 + 3)/60
= 5/60 part of work
Or 1/12 part of work
If they work together then they can complete the work early. Let they take x days to complete the entire work
1/12 × x days = 1
x/12 = 1
Cross multiplication
x = 1 × 12
x = 12 days
It suggest, that if both A and B work together then they can complete the entire work in 12 days.
Answer: if both A and B work together then...
Answer:
don't know❣❣❣