A paricular job can be completed by a team of 10 men in 12 days. The same job can be completed by a team of 10 women in 6 days. How many days are needed to complete the job if the two teams work together?
A paricular job can be completed by a team of 10 men in 12 days. The same job can be completed by a team of 10 women in 6 days. How many days are needed to complete the job if the two teams work together?
[A]18 days
[B]9 days
[C]6 days
[D]4 days
4 days
According to the question,
10 men’s one day’s work
∴ 1 man one day’s work
Similarly,
1 woman one day’s work
∴ (1 man + 1 woman)’s one day’s work
∴ (10 man + 10 woman)’s one day’s work
Therefore, both the team can finish the whole work in 4 days.
Hence option [D] is the right answer.
