What are the dimensions of each side?

Question

Lolo Anton has a rectangular garden 50 m and 25m. He wishes to increase the garden from all sides equally. The area of the garden will be increased by 400m^2. By how much will each dimension be increased?

Answer 1

Let X = the change in each dimension

(X+50) *(X+25) = (25*50) +400

X² + 75X + 1250 = 1650

X² + 75X - 400 = 0

Solve for X