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 a woman finish the work?	Choose the most appropriate option:  A) 125 days  B) 150 days  C) 90 days  D) 225 days  E) none of these

Rationale: 15 women ' s work of a day = 1 ⁄ 6 - 1 ⁄ 10 ⇒ 1 ⁄ 15 part ∴ for 1 whole part a woman will take = 15 × 15 = 225 days . answer d
Answer: D