InterviewSolution
Saved Bookmarks
| 1. |
1). 70 years2). 80 years3). 90 years4). 100 years |
|
Answer» Let the age of FATHER, MOTHER and son be 4x, 3x, x. Then, Age of daughter = 6x/5 Age of Grandmother = 2 × 3x = 6x Sum of ages of family = 4x + 3x + x + 6x/5 + 6x = 76x/5 ⇒ 76x/5 = 45.6 × 5 ⇒ x = 15 ⇒ Age of grandmother = 15 × 6 = 90 YEARS |
|