A Shopkeeper gives 2 articles free on the purchase of every 10 articles. He also allows a discount of 20% to customer and still earn 25% profit. Find the ratio of the cost price to the marked price of the article?
Offer of the Shopkeeper: Buy 10 get 2 free = 12 articles Let the marked price of 1 article be Rs. 10 Marked Price of 12 articles = 10× 12 = 120 Selling Price of 10 articles = 10 × 10 = 100 Actual Selling Price of 10 articles (less discount) = 100 – 20 = 80 Profit % = 25 % ∴ Cost Price = 80 × 100/125 =64 Cost Price: Marked Price = 64: 120 = 8:15
6 16 ? 244 1,245 7,506 52,591
...54 58 85 ? 226 262
...1, 27, ?, 343, 729, 1331
Study the given pattern carefully and select the number that can replace the question mark (?) in it.
4 7 6
15 ? 21
44 68 60
If 6 4 x 5.75 9,
Then, (x²-1) = ?
...3456 1728 2592 6485 22680 102060
...Select the number from among the given options that can replace the question mark (?) in the following series.
64, 60, 52, 40, ?, 4
19 20 29 54 103 ?
100 180 294 448 648 ?
398 308 228 158 98 ?
