Question

Media aritmetica a cinci numere este 11/4. Determinati suma lor

Answer 1

$ma= \frac{a+b+c+d+e}{5}= \frac{11}{4} \\ \\ a+b+c+d+e= \frac{5*11}{4}= \frac{55}{4} \\ \\ \\ \boxed{a+b+c+d+e= 13,75}$

Answer 2

media aritmetica:Ma
notam cele cinci numere cu a,b,c,d,e
Ma(a+b+c+d+e)/5=11/4
Ma(a+b+c+d+e)/5=2,27
    a+b+c+d+e=2,75*5
   a+b+c+d+e=13,75