Question
Two players, A and B, play a tennis match. It is known
that the probability of A winning the match is 0.65. What is the probability of B winning the match?Solution
Let S and R denote the events that A wins the match and B wins the match, respectively. The probability of A’s winning =P(S) = 0.65(given) The probability of B’s winning = P(R) = 1 – P(S) [As the events R and S are complementary] =1 – 0.65 = 0.35
The average cost price of two products, Lakme and Fruitjoy, is Rs. 400. These products are sold at profits of 10% and 20%, respectively. If the combined...
Roshan purchased 100 rolls of paper for Rs. 32 per roll. He spent Rs. 450 on their transportation. He also paid 20 paise per roll for packing of each ro...
An item is purchased for Rs. 300 and its price is marked up by (50/3)% above the cost. After offering a 20% discount on the marked price, the item is so...
Merchant bought 60 sheep at Rs. 120 per sheep. He sold 40 of them at Rs. 150 each. 10 of them died. What should be the selling price of the remaining s...
- Ravi bought jackets at Rs. 350 each and sold them for Rs. 450 apiece. He also incurred an extra cost of Rs. 50 per jacket for transport and taxes. Calculat...
A shopkeeper initially marked up the price of an item by 50% above its cost. To make a sale, he offered two consecutive discounts: the first was 20%, an...
Riya bought a laptop for Rs. (5200 + x). She sold it to Aman at a profit of 10%. Aman sold it to Meena at a profit of 25%, and Meena sold it to Piyush a...
A gadget was priced 75% higher than its actual cost and then sold with a discount of Rs. 525. If it was sold for Rs. 1225, determine its cost price.
A product is sold at a profit of 10.5%. If it had been sold for Rs. 375 more, the profit would have been 22.5%. Find the selling price of the product wh...
The cost price of two dozen bananas is Rs. 96. After selling 18 bananas at the rate of Rs. 36 per dozen, the shopkeeper reduced the rate to Rs. 24 per d...
