Ratio and Proportion Practice Test 5

Question : 5 of 25

Marks: +1, -0

The average age of three girls is 18 years and their ages are in the proportion 1 : 2 : 3. Find the age of the eldest girl.

Solution:

Total age of girls = (3 × 18) years = 54 years
Ratio of their ages = 1 : 2 : 3
Age of the eldest girl =

(54 ×3/6)

years = 27 years.

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