Forward - 36, 39, 25, 69 Backward - 32, 65, 64, 54.
[{70 + (40 - 22) ÷ 3} ÷ 4] = ?
5121.3 × 641.8 ÷ 80.5 = 8?
62.94% of 1800 - 15.03 % of 2400 = ?
10 × 100 ÷ 5 + 9 = ?
20% of 1500 – 75% of 200 = 125% of ?
30% of 2200 +’?’ x 50 – 1020 = 11x 306 + (√ 2250 ÷ 0.1)
140% of 9/8 of ? = 108% of 2800
6 × 1.8 × 0.25 × 70 = ? + 9.5
Find the unknown value of' x' in the proportion $$(5x + 1) : 3 = (x + 3) : 7