Saved Bookmarks
| 1. |
Three years ago the average age of a and b was 18 years. With c joining them, the average becomes 22 years. How old is c now ?a. 24 years b. 27 years c. 28 years d. 30 years how to solve? |
|
Answer» 3years ago A+B /2 =18 A+B = 36 (substitute in below) 36+C= 66 C=30 -3 years C present age is 27 |
|