40 feet
20•18=360
400-360=40 feet
Answer:
Actual length = 22 feet
Actual width = 10 feet
Actual area = 220 sq. feet.
Step-by-step explanation:
The scale in the drawing plan is 3 inches : 5 feet.
So, it interprets that the original length of 5 feet is drawn in the drawing plan of 3 inches length.
Therefore, 13.2 inches length of the drawing is equivalent to 
feet in the original length. (Answer)
And, the 6 inches width of the drawing is equivalent to 
feet in the original width. (Answer)
Now, the area of the actual studio will be (22 × 10) = 220 sq. feet. (Answer)
This looks complicated
lets simplify both sides
By multiplying top and bottom by the conjugate:-
left side = (5-3i)(x + iy) (4+5i) (5-3i)(x + iy) (4+5i)
------------------------ = ------------------------
(4-5i)(4+5i) 41
right side = (2 + i + 3-4)(2+i - 3 + 4i) (by Difference of 2 squares)
= 5-3i)(-1 + 4i)
so as left side = right side
(5-3i)(x+yi)(4+5i) = 41 (5-3i)(-1+5i)
5-3i is common so:-
(x + iy)(4+5i) = 41(-1+5i)
4x +5xi + 4yi - 5y = -41 + 205i
4x - 5y + (5x + 4y)i = -41 + 205i
EQuating coefficients we are left with the system of equations
4x - 5y = -41
5x + 4y = 205
solving this gives x = 21 and y = 25
Answer: $2.40
Step-by-step explanation: 16 times 15 equals 240 you get your decimal point and move it twice to the the left
