There are 4 bottles with the same number balls m respectively. If balls from only the 1-st bottle are moved to the other 3 bottles and finally the ratio of the numbers of balls in the bottles is 1 : 6 : 5 : 4, what fraction does the moved balls represent in terms of m? Select the correct option.
A) m/4
B) m/2
C) 3m/4
D) m
E) 4m/5
now it is 1:6:5:4..   let the common ratio be x, then total number = (1+6+5+4)*x...   but earlier all were distributed equally among all four =16x/4=4x   so m16 /4= 
<gadget id="calculator">16 /4</gadget>
<output>4</output>
4x   so m=4/x OR x=m/4   what was the balls moved 4x-x=3x.. 4x was initial and present is 1*x   so 3x=3∗m/4=3 m/4   ANSWER:3m/4
<result>C</result>
There are 4 bottles with the same number balls m respectively. If balls from only the 1-st bottle are moved to the other 3 bottles and finally the ratio of the numbers of balls in the bottles is 1 : 6 : 5 : 4, what fraction does the moved balls represent in terms of m?