In a college, the ratio of the number of boys to girls is 8 : 5. If there are 300 girls, the total number of students in the college is  Choices.
A) 420	B) 520	C) 620	D) 780	E) 820
Explanation:   Let the boy are 8x and Girls are 5x   =&gt; 5x = 300   =&gt; x = 60   Total students = 8x+5x = 13x 8 +5= 
<gadget id="calculator">8 +5</gadget>
<output>13</output>
13x= 13(60) = 780   Option 780
<result>D</result>
In a college, the ratio of the number of boys to girls is 8 : 5. If there are 300 girls, the total number of students in the college is