Question 264595
10*3=30 M^2 SIZE OF THE POOL.
(10+X)(3+X)=2*30
30+3X+10X+X^2=60
X^2+13X+30-60=0
X^2+13X-30=0
(X+15)(X-2)=0
X-2=0
X=2 ANS.
PROOF:
(10+2)(3+2)=2*30
12*5=60
60=60