Question 1108943
Total area is area of picture (72)+ area of border (124)=196
The picture is 9 x 8. The border is x wide
The total area is therefore (9+2x)(8+2x) and that equals 196
72+34x+4x^2=196
4x^2+34x-124=0
2x^2+17x-62=0
quadratic formula is x=(1/4)(-17+/- sqrt (289+496); sqrt term is sqrt(785)=28.01
x=(1/4)(-17+28.01) only positive root
x=2.75 in ANSWER for width
2x=5.50
Whole thing is 14.5*13.5=195.75, area of border is 123.75, within rounding error to 124.