2012 · Q2
X can do a piece of work in 25 days. Y is 25% more efficient than X. The number of days taken by Y is:
Elementary MathematicsArithmetic
- A15 days
- B20 days
- C21 days
- D30 days
Explanation
Y's rate is 1.25 times X's, so Y takes 25/1.25 = 20 days.