15 men can complete a piece of work in 5 days, while 20 women can complete it in 5 days. 8 men start working on the job & after working for 3 days, all of them stopped working. How many women should be put on the job to complete the remaining work in 4 days?

One day work of a man = 1/(15 ×5) = 1/75 So, 3 days work of 8 men = 1/75 ×8 ×3 = 8/25 Remaining work = 1 - 8/25 = 17/25 One day work of a woman = 1/(20 ×5) = 1/100 According to the question Remaining work should be completed in 4 days Let the total number of women required to complete the remaining work in 4 days = x 4 days work of x women = 1/100 ×4 ×x = 17/25 x=17 Alternate Method: 15M ` ` 5 = 20W ` ` 5 M:W = 20:15 = 4:3 So 15M ` ` 5 = 8M ` ` 3 + xW ` ` 4 15 x 4 x 5 = 8 x 4 x 3 + x` ` 3` ` 4 300 = 96 +12x 204 = 12x x=17

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^{th}of the land in 15 days and B can cultivate 1/4^{th}of the land in 10 days. In how many days working together A and B can cultivate 13/25^{th}of the land? - Brahma, Vishnu and Mahesh are three workers, employed by a Contractor. They completed the whole work in 20 days. Initially all of them worked together, but the last 60% of the work was completed by only Vishnu and Mahesh together. Brahma worked with Vishnu and Mahesh only for initial four days then he left the work due to his poor health. Also, Vishnu takes 25% less time to finish the work alone than that of Mahesh working alone. If they were paid Rs. 24500 for the entire work, then what is the share of least efficient person?
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