How much of the Brics + export share was contributed by

The value of ((0.27)²-(0.13)²) / (0.27 + 0.13) is:

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

(72 × 6 ÷ 12) × 6 = ?

40% of 220 × 15 ÷ 20 = ?

8 × 9 + ? – 6 × 11 = 12 × 8

Simplify the following expressions and choose the correct option.

(5/9 of 486) + (3/4 of 224) - (25% of 364)

(24% of 500 - 20)  ÷ 25 = ?  ÷ 4

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

53 × 12 + 43 × 13= ? × 7 - 12% of 1300

4.2 × 6.5 × 7.8 = ?

400 % of 20 + 65 % of 620 - 92 × 5 = ?

4.7 × 3.5 + 4.2 × 4.5 = 22.5 × 3.5 - ?