If $1 is 5%, 100% would be $1 times 100/5= $1 times 20 = $20
2y=2_8
2y=_6
Divide both sides by 2 so that y can stand alone
Therefore y=_3
The area are in the ratio of the squares of corresponding sides.
That is 15^2 : 20^2 = 225:400
so the area of the smaller figure = (225/400) * 64
= 0.5625 * 64
= 36 cm^2 (answer)
