The proportion of area under different crops at a point

52% of 400 + √(?) = 60% of 600 - 25% of 400

What value should come in the place of (?) in the following questions?

(7/9) of (15/4) of 480 = ?

Simplify the following expression:

36895 - 4256 - 2233 = ? 

What will come in the place of question mark (?) in the given expression?

23 X 35 - ? = (13² + 16) X 3 + 25

(744 ÷ 6) - (120/5) + 5.5% of 800 = ?²

What will come in the place of question mark (?) in the given expression?

(243/9) X 5 - 11² = ? ÷ (24 - 13)

What value should come in the place of (?) in the following questions?

40% of 480 + √? = 25% of 300 + 126

30% of 2200 +’?’ x 50 – 1020 = 11x 306 +  (√ 2250 ÷ 0.1)  

What will come in the place of question mark (?) in the given expression?

30% of 50% of 1200 = 18/11 × ?