The average age of A'B and C is 25
years. If the average age of A and B
is 30 years, then find the age of C.
Answers
Answered by
1
15
Step-by-step explanation:
a+b+c/3=25
a+b+c=75
a+b/2=30,a+b=60
up we have
a+b+c=75
60+c=75.
c=15
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