the average age of a class of 20 boys is 15 years a new boy joins the class the average age of the entire class now becomes 15.2 years what is the age of the new boy?
Answers
Answered by
1
19 years is the answer.
Abhaytomar11:
plz mark it as brainliest I need it my dear friend plz mark it
Answered by
3
let the sum of age of 20 boy = A
A = 20×15
A + NEW BOY = 21(15.2) = 319.2
new boy = 319.2 - A
= 319.2 - 300
= 19.2 year
A = 20×15
A + NEW BOY = 21(15.2) = 319.2
new boy = 319.2 - A
= 319.2 - 300
= 19.2 year
ok wait
but i already upload this question
send me link of this question... so that i can upload picture
please check the message
how can i send u link of this question there is no option?
upper right corner of the question page
there is only report this question and comments nothing else
3 triangle shape dots are there
yes i understand but there is no option of copy link
i message u solution .. check msg
Similar questions