In which type of tax is the marginal tax rate higher

[192 ÷ 6 × 5] ÷ (? + 3) = 20 

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

(125 × 64) ÷ (8 × 5) + (12.5)² – (144 ÷ 3) = ?

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

(40% of ? × 4³ ) – 23² = 751 

15% of 695 – 12.5% of 250 =? – 1200

Simplify the following expressions and choose the correct option.

{[(96 ÷ 3) × (5/8)] + 7²} ÷ 9 = ?

26 ² – 13% of 400 + (529 ÷ 23 ² ) = ? ² 

Evaluate: 84 ÷ 7 × (3 + 5) − 2³

31% of 1900 - ? = 7³

535 + ? × 27 - 22 × 20 = 230