If A is $\frac{1}{6}$ of C, and B is twice of A, and the average of A, B and C is 30, then the difference between A and C is: |
40 60 50 80 |
50 |
Let C = 6 A : B : C 1 : 2 : 6 Average = $\frac{9r}{3}$ = 30 3r = 30 or r = 10 Difference between A and C = 5r = 50 |