### Home > CAAC > Chapter 16 > Lesson 16.9.2.2 > Problem 9-87

9-87.

2*y* + 3*x* = 100

2*y* = 100 − 3*x*

Area_{total} = Area_{rectangle} + Area_{triangle}

To find the area of the triangle, drop an altitude forming two congruent triangles. The diagonal will be '*x*'.