Question

A and B can complete a work in 12 days B and C in 15 days and B in 20 days in how many days will they complete the work together and
separately ​

Answer 1

Answer: allegation method

A+B. B+C B

12. 15. 20

60

5. :. 4. :. 3

B=3

A+B=5

A=2

B+C=4

C= 1

A B C together completed the work in 60/6=10days

A alone complete the job 60/2=

30 days

B alone complete the job in 60/3= 20days

C alone can complete the job in 60/1 = 60 days

Step-by-step explanation: