TIMO 2017 - Senior Secondary (Grades 10-12) - Heat Round - Paper 5 Question 5

Five weights $A,B,C,D,E$ satisfy $A+B=7$, $B+C=9$, $C+D=11$, $D+E=8$, $A+C+E=10$, all in pounds. Find the weight of $E$ in pounds.