A fruit salad mixture consists of apples, peaches, and grapes. There are 3 times as many pounds of apples as grapes and 2.5 times as many pounds of peaches as grapes. If a mixture that has an average (arithmetic mean) of 39 pounds per fruit, how many more pounds of apples than grapes does the mixture have?	Pick:
A) 5  B) 12  C) 19  D) 36  E) 50
A+P+G= 39*3   A=3G   P=2.5G   3G+2.5G+G= 39*3   G=39*3/6.5= 
<gadget id="calculator">39*3/6.5</gadget>
<output>18</output>
18   A= 6*3=54   36ifference = 36   '36' is the answer
<result>D</result>
A fruit salad mixture consists of apples, peaches, and grapes. There are 3 times as many pounds of apples as grapes and 2.5 times as many pounds of peaches as grapes. If a mixture that has an average (arithmetic mean) of 39 pounds per fruit, how many more pounds of apples than grapes does the mixture have?