InterviewSolution
Saved Bookmarks
| 1. |
The height of three towers are in the ratio of 5:6:7. If a spider takes 15 minutes to climb the smallest tower, how much time it will take to climb the highest one 1. 15 minutes 2. 18 minutes3. 21 minutes4. 54 minutes |
|
Answer» Correct option is (3) 21 minutes Let height of towers, be 5x, 6x, 7x meter respectively ∴ Speed of spider = \(\frac{5x}{15}m/min\) ∴ Time taken to climb the highest one = \(\cfrac{7x}{\frac{5x}{15}}\) = \(\frac{7x\times15}{5x}\) = 21 min |
|