Question 1010899
A=100*50=5000 sq ft.
new length is 100+x.
new width is 50+x
new area is 15,000 sq ft
(100+x)(50+x)=5000+100x+50x+x^2
x^2+150x-10000=0
(x+200)(x-50)=0
x=50 ft, only sensible root.
New dimensions are 150+100=15,000 sq ft.