InterviewSolution
Saved Bookmarks
| 1. |
1). 62). 93). 44). 10 |
|
Answer» Let Z can do a work in z days. ⇒ Z will do 1/z amount of work in 1 day. ⇒ X and Y will do 1/10 and 1/15 amount of work in 1 day. ⇒ Total work done by all three in 1 day = 1/3 ⇒ $(\frac{1}{{10}} + \frac{1}{{15}} + \frac{1}{z} = \frac{1}{3})$ ⇒ $(\frac{1}{z} = \frac{1}{3} - \frac{1}{{10}} - \frac{1}{{15}} = \frac{{10 - 3 - 2}}{{30}} = \frac{5}{{30}} = \frac{1}{6})$ ∴ Z will take 6 days to complete the work alone. |
|