MathDB
Problems
Contests
National and Regional Contests
India Contests
India Pre-Regional Mathematical Olympiad
2017 India PRMO
3
3
Part of
2017 India PRMO
Problems
(1)
2017 preRMO p3, team A needs 12 days, team B needs 36
Source:
8/9/2019
A contractor has two teams of workers: team
A
A
A
and team
B
B
B
. Team
A
A
A
can complete a job in
12
12
12
days and team
B
B
B
can do the same job in
36
36
36
days. Team
A
A
A
starts working on the job and team
B
B
B
joins team
A
A
A
after four days. The team
A
A
A
withdraws after two more days. For how many more days should team
B
B
B
work to complete the job?
algebra
problem