Question
The average age of three children is 14 years. If their
ages are in the ratio 1:2:3. Find the age of the youngest child.Solution
Total age of three children = 14 × 3 = 42 years Let their ages be x, 2x and 3x respectively. => x + 2x + 3x = 42 => 6x = 42 => x = 7 Therefore the age of youngest child = 7 × 1 = 7 years
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Which word is coded as ' jk '?
If 144 C 12 = 12 and 180 C 9 = 20, then 256 C 16 = ?
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