A person goes from his home to his office taking one hour. There he works for 2 hours and then in half hour reaches home back. A representative displacement-time graph is
18 men can complete a piece of work in 6 hours, while 30 women can complete the same work in 8 hours. 9 men start working on the job and after working for 3 hours, all of them stopped working. How many women should be put on the job to complete the remaining work, if it is to be completed in 6 hours?