In the sentence "She sings beautifully," what is the

36% of 250 – 18% of 200 = 30% of ?

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

44% of (750 - 350) + ?% of 540 = √625 X 20

Find the unknown value of' x' in the proportion $$(5x + 1) : 3 = (x + 3) : 7

125% of 80 – 6 × 4 = ? × 13 – 54

(25 × 12 + 30 × 8 – 22 × 10) = ?

√529 * 5 – 15% of 220 + ? = 120% of 160

9 × 4 ^? ÷ 16 = 144

? ÷ [35% of 379 - 34(4/5)] = 0.4

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

(20% of 820 – 56 + 11 × 8) ^1/2 = ? – 6²