The sale price of an electric iron is 1950 and its price before the tax is added is 1800. Find the rate of VAT.

what are the answer choices given for this problem?

area of rectangle a is 2 times that of rectangle b that means 2x+x =   36cm^2

3x = 36cm ^2

x = 36/3

x= 12cm^2

and 2x = 24cm^2

now side of square = are divided by sides = 36/4 = 6cm

that means length of rectangle a and b is 6cm too

now for rectangle a,

l*b = area

= 6*y=24

y=24/6 = 4

therefore dimensions of rectangle a are- length = 6cm, breadth = 4cm

and for rectangle b, length = 6cm and breadth = 6-4 = 2cm.

hope this .

answer is  

d.

a circle

i got it down for you chief.

simplified version :

3y^2-10y^2x^4+40x^2+3y^2/2x^2