Question

The average age of boys in a class of 20 is 15.6 years what will be the average age if 5 new boys come whose average age is 15.4?

Answer 1

$\huge\mathcal\colorbox{lavender}{{\color{b}{✿Yøur-Añswer♡}}}$

$\large\bf{\underline{\red{illusion}}}$

Average of 20 boys = 15.6

Average of 5 new boys = 15.4 

New average of 25 boys = (15.6 * 20 + 15.4*5)/25 = 15.56 years

☆✿╬ʜᴏᴘᴇ ɪᴛ ʜᴇʟᴘs ᴜ╬✿☆