What is AE ?Enter your answer in the boxUnits

(2x+10)/10 = (x+3)/4
10(x+3) = 4(2x+10)
10x + 30 = 8x + 40
2x = 10
x = 5

so
AE = 2(5) +10
AE = 10 + 10
AE = 20