The ratio of a father's age to his son's age is 7 : 4. The product of the numbers representing their ages is 1372. The ratio of their ages after 8 years will be:
A.19 : 13
B.19 : 12✓ Correct
C.19 : 14
D.19 : 11
Explanation
Let ages be 7x and 4x. Product: 28x² = 1372, x² = 49, x = 7. Father = 49, Son = 28. After 8 years: 57:36 = 19:12.
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