All angles are of triangle and thus give sum of 180⁰
x + 5 + 7x - 5 + x = 180⁰
9x = 180⁰
x = 20⁰
55 percent, I believe. Hope this helps!
Hello,
The initial amount of students is 75. The amount decreased by 80%.
new total = 75-80%
= 15
Thus, 15 students are left.
Faith xoxo
