Question

One angle of 180° is divided in to angles. The ratio of the angles is 4/5. Find the greatest angle?

Answer 1

that is what I get, however, the possible answers for the greatest angle are:
100,90,80,50

Answer 2

Because the ratio of the angles is 4 to 5, the math statement is going to be:
\[4x+5x = 180\]

Answer 3

x is going to be 20, so 4x = 80, and 5x = 100

Answer 4

4x+5x=180
9x=180
x=20
4(20)+5(20)=180
80+100=180
little angle 80, big angle 100

Answer 5

Thanks

Answer 6

welcome!