Answer:
(100 + x) x (150 + x) = 18,000 ft^2
Step-by-step explanation:
area of a rectangle = length x width
Area of the original field = 15,000
Area after 20% increase = 1.2 x 15,000 = 18,000
Increase i length = 100 + x
increase i width = 150 + x
Area = (100 + x) x (150 + x) = 18,000 ft^2
