Three pumpkins are weighed two at a time in all possible ways. The weights of the pairs of pumpkins are 12\:kg,13\:kg and 15\:kg. How much does the lightest pumpkin weigh?
Answer Choices
A. 4\:kg
B. 5\:kg
C. 6\:kg
D. 7\:kg
E. 8\:kg
Three pumpkins are weighed two at a time in all possible ways. The weights of the pairs of pumpkins are 12\:kg,13\:kg and 15\:kg. How much does the lightest pumpkin weigh?
Answer Choices
A. 4\:kg
B. 5\:kg
C. 6\:kg
D. 7\:kg
E. 8\:kg