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The average age of four brothers is 12 years. If the age of their mother is also included, the average is increased by 5 years. The age of the mother (in years) is :
Answer & Solution
Correct Answer:
Option
A
Sum of age of four brothers = 12 × 4 = 48
Sum of age of four brothers and their mother
= 17 × 5 = 85
∴ Mother's age = 85 - 48 = 37 years
Sum of age of four brothers and their mother
= 17 × 5 = 85
∴ Mother's age = 85 - 48 = 37 years
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