Mary, Peter, and Lucy were picking chestnuts. Mary picked twice as much chestnuts than Peter. Lucy picked 4 kg more than Peter. Together the three of them picked 28 kg of chestnuts. How many kilograms of chestnuts did Mary, Peter, and Lucy pick respectively?  Pick:	A) 6, 10 and 12	B) 12, 10 and 6	C) 10, 6 and 12	D) 12, 6 and 10	E) 6, 12 and 10
M = 2P   L = P+4   M + P + L = 28   2P + P + (P+4) = 28   P = 6, M = 12, L = 10   Therefore, Mary, Peter, and Lucy picked 12, 6, and 10 kg, respectively.   The answer is 12, 6 and 10.
<result>D</result>
Mary, Peter, and Lucy were picking chestnuts. Mary picked twice as much chestnuts than Peter. Lucy picked 4 kg more than Peter. Together the three of them picked 28 kg of chestnuts. How many kilograms of chestnuts did Mary, Peter, and Lucy pick respectively?