Question

media aritmetica a trei nr a,b,c este egala cu 37. calculati media aritmetica a nr a,b,c si 25.

Answer 1

$\frac{a+b+c}{3}$= 37 =>a+b+c=111

$\frac{a+b+c+25}{4}= \frac{111+25}{4} = \frac{136}{4}=34$