2/3 + 3/4 = 17/12 or 1 5/12
There are no obtuse angles
2y + 2(y-2) = 5y - 3(y-10)
2y + 2y - 4 = 5y -3y +30
4y - 4 = 2y + 30
4y - 2y = 30 + 4
2y = 34
y = 34/2
y = 17
The answer is 8% because each rate (2%) goes up $200, making $1200 at 6% into $1800 at 8%.
Hope this helps!
