Three numbers are in the ratio of 2:3 :5. If the sum of the largest and the smallest number is 9800, then what is the difference of the largest and the smallest number?

4200

Ratio = 2 : 3 : 5

Sum of the largest and the smallest nos. = 9800

                                                            7R = 9800  ⇒ 1R = 1400

The difference b/w the largest and the smallest number = 3R = 3 x 1400 = 4200