Question

in a pentagon two angles are 40 degree and 60 degree and the rest are in ratio 1:3:7 find the biggest angle

Answer 1

the biggest angle of the Pentagon with the given condition is 280°

Answer 2

the total angle sum =540°
40°+60°+x+3x+7x=540°
100°+11x=540°
11x=440°
x=40°
so the biggest angle is 7x=7*40=280°