if the average age of ABC is 21 years and the average age of a b c and d is 23 years then the age of D will be
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Answer:
The age of D is 29 years.
Step-by-step explanation:
Given that the average age of A, B, C is 21 years. Then the total age of A, B, C is
= 3 * 21 years
= 63 years
Also, the avenue age of A, B, C, D is 23 years. Then the total age of A, B, C, D is
= 4 * 23 years
= 92 years
Therefore, age of D is
= (total age of A, B, C, D) - (total age of A, B, C)
= 92 - 63 years
= 29 years
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