Question
Sara sold 30 scarves at a profit of 25%. If she had sold
all the scarves for Rs. 3000 more, her overall profit would have been 50%. What is the selling price of 20 scarves at 35% profit?Solution
Let the cost price of each scarf be Rs. s.  Initial selling price of all scarves = 1.25 × 30 × s = Rs. 37.5s  According to the question, 37.5s + 3000 = 1.5 × 30s Or, 45s - 37.5s = 3000 Or, 7.5s = 3000 Or, s = 400 Therefore, the selling price of 20 scarves at 35% profit = 20 × 1.35s = Rs. 10800
390/? = √256 + 3.5
600 ÷ 8 + 12 % of 250 + ? * 14 = 50 * √49
? × 5.5 = √1225 + 40% of 30% of 37.5% of 5000 – 63
11 × 25 + 12 × 15 + 14 × 20 + 15 = ?
35% of 500 × 22% of ? = 847
144% of 200 + 11% of 900 + 10% of 20 =?
√0.49 + √6.25 + √1.44 + √1.21 =? % of 125
4.7 × 3.5 + 4.2 × 4.5 = 22.5 × 3.5 - ?
(5832)1/3  × 10.11 × 11.97 ÷ 16.32 = ? + 45.022
82.3 × 644.7 × 723.4 × 815.85 = 72?