Three numbers are in the ratio 4 : 5 : 6 and their average is 30 . The largest number is:  Pick one
A) 28 B) 32 C) 36 D) 42 E) 45
Explanation:   Let the numbers be 4x, 5x and 6x. Therefore,   (4x+5x+6x)/3 = 30   15x = 90   x = 6   Largest number = 6x = 36.   ANSWER 36
<result>C</result>
Three numbers are in the ratio 4 : 5 : 6 and their average is 30 . The largest number is: