Question
When a person sold an article, his profit% is 40% of the
selling price. If the cost price is increased by 50% and the selling price remains the same, then find decrement in the profit is what percent of the selling price of the article.Solution
Let Selling price = 100 and Profit = 40 Then, CP = 100 – 40 = 60 Increased in CP = (50/100) × 60 = 30 New CP = 60 + 30 = 90 Decrement in Profit = (100-60) - (100-90) = 30 Profit% = [(100 – 30)/100] × 100 = 70%

12/15 of 13/60 of 7/39 of 90603 = ?
(5.6 + 2.4 + 13.8 – 2.8) × 5 = ? × (12.5 – 7.5)
225÷ 25 x 21 - 30 = ? + √2209 - √7744
- Evaluate: 195 ÷ 13 × 8 + 220 – 30% of 500
Solve the following equation.
143 + 14.3 + 1.43 + 0.143 + 0.0143 =?
{(5/8) + (4/5)} × (?/19) = 33
√(?) ² = √7396 - √6889
58% of 3300 - ?% of 2900 = 1740
[(15)³ × (8)²] ÷ (90 × 6) = ?²