The present ages of three person in proportions 4 : 7 : 9 Eight years ago, the sum of their ages was Find their present ages (in year).
সমাধান
সঠিক উত্তর: Option B
Let their present ages be 4x, 7x and 9x years respectively.
Then, (4x - 8) + (7x - 8) + (9x - 8) = 56
=> 20x = 80
=> x= 4.
Therefore, Their present ages are 4x = 16 years,7x = 28 years and 9x = 36 years respectively.
