Chris mixed 3 pounds of raisins with 3 pounds of nuts. If a pound of nuts costs 3 times as much as a pound of raisins, then the total cost of the raisins was what fraction of the total cost of the mixture?  Choose the most appropriate option.
A) 1/7 B) 1/5 C) 1/4 D) 1/3 E) 3/7
1 lbs of raisin = $1   3 lbs of raisin = $3   1 lbs of nuts = $3   3 lbs of nuts = $9   Total value of mixture = 9+3= 
<gadget id="calculator">9+3</gadget>
<output>12</output>
12   Fraction of the value of raisin= 3/12 = 1/4   Ans:1/4
<result>C</result>
Chris mixed 3 pounds of raisins with 3 pounds of nuts. If a pound of nuts costs 3 times as much as a pound of raisins, then the total cost of the raisins was what fraction of the total cost of the mixture?