Mary, Peter, and Lucy were picking chestnuts.

Mary, Peter, and Lucy were picking chestnuts. Mary picked three times as much as much chestnuts than Peter. Lucy picked 5 kg more than Peter. Together the three of them picked 30 kg of chestnuts. How many kilograms of chestnuts did Mary, Peter, and Lucy pick respectively?

Quiz

Answer/Solution

15, 5, and 10

Steps/Work

M = 3P
L = P+5
M + P + L = 30
3P + P + (P+5) = 30
P = 5, M = 15, L = 10
Therefore, Mary, Peter, and Lucy picked 15, 5, and 10 kg, respectively.
The answer is C.