Probability of white ball= a/(5 + a + b) a/(5 + a + b) = 2/7 5a – 2b = 10 …………(1) Probability of purple = b/(5 + a + b) = 5/14 9b – 5a = 25 ………….(2) From (1) and (2) we get a = 4 b = 5 Therefore sum will be (a + b) = (4 + 5) = 9
After selling 60 Fans a shopkeeper earn a profit of the selling price of 18 coolers. While selling 60 coolers a shopkeeper losses the selling price of 2...
Deepak sells all his goods available in his shop at the cost price, but he cheats on his customers and gives 25% fewer goods than he should give. Find h...
The cost price of two articles is same. One article is sold at 40% profit and another at 10% loss. If the selling price of one article is Rs. 700 more t...
A started a business with an investment of Rs 32,000. After 2 months B joins in with 5/8 of the amount that A invested and A withdraws Rs 4,000. After 2...
The combined cost price of two watches, 'P' and 'Q', amounts to Rs. 1,250. Watch 'P' is sold for a 20% profit, while watch 'Q' achieves an 18% profit. G...
A seller marked the price of an item at Rs. 2,800. The seller gave successive discounts of (a + 3)% and (a - 3)% to a customer. If the customer paid Rs....
Profit percentage received on a product when sold for Rs.560 is equal to the percentage loss incurred when the same product is sold for Rs.420. Find the...
Find the profit percentage earned on a school bag if it was sold at Rs.1746 after offering a discount of 10% and the marked price of a school bag is Rs....
If a pen is bought at 11/12th of its selling price and sold at 10% more than its selling price, what will be the percentage profit?
A shopkeeper sold an article after giving a discount of 25% and made a profit of Rs. 40. Find the marked price of the article if cost price of the artic...
