If it is 40% off, then u are paying 60%
0.60(20) = 12 <== on sale, it is 12 pounds
225 perch. You set up the equation 4/3=300/x. Then you cross multiply to get 4x=900, then you divide each side by 4 which makes x=225
Answer:
16
Step-by-step explanation:
A square has same length on all sides.
So, 18x-20=42-13x
18x+13x=42+20
31x=62
x=62/31=2
Now you can substitute x=2 in one of the equations to find the length of the side.
18x-20 = (18*2)-20 = 36-20 = 16