Question
X and Y are independent normal variables with mean
50 and 80 respectively and standard deviation as 4 and 3 respectively. What is the distribution of X+Y?Solution
The correct answer is C
Rittu and Mittu started a cosmetic business with Rittu investing Rs. 30,000 and Mittu investing a certain amount of money. They hired a receptionist as ...
A trader increases the cost price of an article by 20% and then gives a discount of 10%. What is his overall profit or loss percentage?
Viru has Rs. 9000. He gives this money to Mahi on simple interest and after 4 years received the double amount. If the interest rate is 5% more than the...
A shopkeeper bought 'x - 30' kg of rice at Rs. 60 per kg and 30 kg of rice at Rs. 'x' per kg and mixed them. He sold the mixture at Rs. 90 per kg and th...
A person bought an article and sold it at a loss of 20%. If he had bought it at 10% loss and sold it for 74 more, he would have gained 30%. Find the pro...
Total cost price of two items, A and B, is Rs. 720. Both are marked up by 50%, and the marked price of item B is Rs. 150 more than that of item A. What ...
A shopkeeper raises the price of a watch by 20%, followed by another increase of 30%. After offering a 25% discount, he makes a p...
- A seller marked an article 70% above its cost price and sold it after allowing 20% discount. If he made a profit of Rs. 63, then find the difference betwee...
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...
Suresh bought an old scooter at Rs. 12000 and he spent Rs. 3000 on its maintenance. He increased the price of scooter by 50% at the time of selling but ...
