The mean age of john,william,sam and katy is 25.the age of jhon is 22,age of sam is 30 and age of katy is 24.then tell me the age of william.
Answers
A) 23	B) 24	C) 25	D) 26	E) 27
solution   let age of william be x.   now, the mean of four age=(22+x+30+24)/4=25   76+x=100   so x=24.   answer 24
<result>B</result>
The mean age of john,william,sam and katy is 25.the age of jhon is 22,age of sam is 30 and age of katy is 24.then tell me the age of william.