Given:
Ratio of ages = 4 : 7 : 9
Eight years ago, total age = 56
Solution:
Total age eight years ago:
(4x - 8) + (7x - 8) + (9x - 8) = 56
4x + 7x + 9x - 24 = 56
20x - 24 = 56
20x = 56 + 24
20x = 80
x = 80 / 20
x = 4
Ages of them -
The eldest is 36 years old now.
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