If there are 80 red and blue marbles in a jar, and the ratio of red to blue marbles is 2:3, what is the probability that, drawing twice, you will select two red marbles if you return the marbles after each draw? Pick
A) 1/25	B) 2/25	C) 3/25	D) 4/25	E) 21/25
30 red and blue marbles in a jar, and the ratio of red to blue marbles is 2:3   So, 5x=80 ---&gt; x=16   Red marbles = 2*x = 2*16= 
<gadget id="calculator">2*16</gadget>
<output>32</output>
32   Blue marbles= 3*x = 3*16= 
<gadget id="calculator">3*16</gadget>
<output>48</output>
48   Prob to select a red marble= 32/80 = 2/5   Prob to select 2 red marbles with replacement = 2/5*2*5= 
<gadget id="calculator">2/5*2*5</gadget>
<output>4</output>
4/25   Hence, answer will be 4/25.
<result>D</result>
If there are 80 red and blue marbles in a jar, and the ratio of red to blue marbles is 2:3, what is the probability that, drawing twice, you will select two red marbles if you return the marbles after each draw?