Question

if the ratio of mode and median is 7:4, find the ratio of mean and mode.

Answer 1

given;mode/median=7/4
          mode=7k              (where k is some constant)
          median=4k
 
we know that;
               mode=3 x median - 2 x mean
               7k =3 x 4k - 2 x mean
               2 x mean = 12k - 7k
                  mean= 5k/2
so;
     mean=5k/2
     mode=7k
therefore; mean/mode=5/14