A club wants to mix 20 pounds of candy worth $10.00 per pound with candy worth $5.00 per pound to reduce the cost of the mixture to $6.00 per pound. How many pounds of the $5.00 per pound candy should be used?
Answers:
A) 40	B) 50	C) 60	D) 70	E) 80

Rationale: "let number of pounds of 5 $ candy to be used be w 6 = ( 20 * 10 + 5 * w ) / ( 20 + w ) = > 120 + 6 w = 200 + 5 w = > w = 80 answer e"
Answer: E