Three numbers are in the ratio 4 : 5 : 6 and their average is 36 . The largest number is: Choose the correct choice.
A) 28  B) 32  C) 43.2  D) 42  E) 45
Explanation:   Let the numbers be 4x, 5x and 6x. Therefore,   (4x+5x+6x)/3 = 36   15x = 108   x = 7.2   Largest number = 6x = 43.2.   ANSWER 43.2
<result>C</result>
Three numbers are in the ratio 4 : 5 : 6 and their average is 36 . The largest number is: