Question

Three years ago the average age of A and B was 18 uears with C joining them, the average age becomes 22 years. How old is C now? ​

Answer 1

Answer:

33 yrs.

Step-by-step explanation:

average age =sum of total ages /no.of persons

.hence,sum of age of A &B before 3 yrs.ago =18×2=36

hence,now there sum of ages =36+6=42

after C joined ,sum of their ages =66 +9=75

Age of C=75-42=33

Answer 2

Answer:

33 yrs..

Step-by-step explanation:

average age =sum of total ages /no.of persons .

hence,sum of age of A &B before 3 yrs.ago =18×2=36  

hence,now there sum of ages =36+6=42  

after C joined ,sum of their ages =66 +9=75  

Age of C=75-42=33

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