Three numbers are in the ratio 5 : 4 : 3 and their average is 360. The largest number is :  Options.
A) 30  B) 450  C) 27  D) 21  E) 22
Explanation:   Let the numbers be 5x, 4x and 3x, Then, (5x + 4x + 3x ) / 3 =360   =&gt; 12x = 360*3   =&gt; x = 90   Largest number 5x = 5*90= 
<gadget id="calculator">5*90</gadget>
<output>450</output>
450   Answer: 450
<result>B</result>
Three numbers are in the ratio 5 : 4 : 3 and their average is 360. The largest number is :