Saved Bookmarks
| 1. |
If A and B can do a piece of work in 10 days and 15 days respectively, then the part of work they can do together in 3 days is?1. 1/22. 13. 1/64. 1/3 |
|
Answer» Correct Answer - Option 1 : 1/2 Given: A and B can do a piece of work in 10 days and 15 days respectively Concept Used: One day work = 1/number of days taken by the worker to complete the whole work Calculation: One day work of A = 1/10 One day work of B = 1/15 One day work of A + B = 1/10 + 1/15 ⇒ (3 + 2)/30 ⇒ 1/6 Now, 3 days work done by (A + B) is 3 × 1/6 ⇒ 1/2 Hence, the part of work they can do together in 3 days is 1/2 of the whole work |
|