Four numbers are in the ratio of . Sum of these numbers is 54. What is the difference between the largest and smallest number?
Show answer & explanation
Correct answer: A
Explanation
Ratio = 2 : 4 : 5 : 7
Let the numbers be 2x, 4x, 5x, 7x
Sum = 54
18x = 54
x = 3
Numbers = 6, 12, 15, 21
Difference = 21 – 6 = 15