10 men and 15 women finish a work in 6 days. One man alone finishes that work in 100 days. In how many days will one women can finish the work?

∵ One man alone finishes te work in 100 days.
⇒ 10 men can finish the work in 10 day.
⇒ 15 women can finish work in one days = 1/6 - 1/10 = 1/15 work
⇒ 15 women finish the whole work in 15 days
∴ 1 women finishes the whole work in = 15 x 15 = 225 days