Question
The average age of three children is 24 years. If their
ages are in the ratio 5:6:7. Find the age of the youngest child.Solution
Total age of three children = 24 × 3 = 72 years Let their ages be 5x, 6x and 7x respectively. => 5x + 6x + 7x = 72 => 18x = 72 => x = 4 Therefore the age of youngest child = 5 × 4 = 20 years
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