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?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 4200.
Let the three numbers be 2x, 3x, and 5x.
5x + 2x = 9800
7x = 9800
x = 9800 / 7 = 1400
Now, the difference between the largest and smallest number is:
5x - 2x = 3x = 3 x 1400 = 4200