Question
A shopkeeper give 4 articles free on the purchase of
every 12 articles. He also allows a discount of 20% to customer and still earns 20% profit. Find the ratio of cost price to mark price of the article.Solution
Buy 12 get 4 free,% discount offered = [4/(12 + 4)] ×100 = 4/16×100 = 100/4 = 25% So final Offer(discount) = Buy 12 get 4 free + 20% discount = 25% discount +20% discount So net discount = a + b - ab/100 = 25 +20 – (25 × 20/100) = 45 – 5 = 40% Let MP = 100 SP = (100-40% discount on MRP ) = 100 -40 = 60 Profit = 20% = 1/5 So CP = 50 CP∶ MP = 50∶ 100 = 1∶ 2 Alternate Method 
What will be the approximate value of the following questions.
81% of 1550 + 27² = ? + 1386 ÷ 22
456 x 99.999 + 654 = ?
What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)...
Find the approximate value of Question mark(?). No need to find the exact value.
71.92 ÷ 8.02 × 6 + 44.95% of 499.79 – √(80.91) – 10.03...
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)
(627.98 ÷ 3.98 + 11.01 X 12.98 - ?) ÷ √623 = (178.98 + 37.08) ÷ 23.98Â
√2023.85 + (24.77% of 1999.73) - (3/8 of 799.91) = ?
Find the approximate value of Question mark(?). No need to find the exact value.
(519.79 ÷ 10.03) × (47.98 ÷ 6) + √(63.94) × 4.04 = ?
...What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)...
