For the following questions answer them individually
A solution containing alcohol and water in the ratio 7 : 2 is mixed with twice the amount of another solution containing alcohol and water in the ratio 5 : 1. What is the percentage of alcohol in the final mixture?
A milk and water solution has milk and water in the ratio 4:1. After adding 40 ml of water the ratio of milk and water becomes 2:1. What is the total volume of the solution now?
A fruit seller bumps up the cost price of apples per kg by 50% and then gives a discount of 20%, to sell apples at the rate of 72 per kg. What is the cost price of the apples per kg?
If by selling 20 apples the shopkeeper gains the cost price of 4 apples, find the gain%.
A vendor buys a book at Rs 120 and marks it at Rs 145. When a regular customer visits the shop, the vendor gives him a discount of 25%. What is the price at which the customer gets the book?
If a seller earns a profit of 30% by selling a product on a selling price of Rs. 1200. What will be the cost price of the product?
The shopkeeper marked an article 30% above the cost price and sold it a discount of 20%. If he made a profit of Rs. 60. Find the cost price of the article.
If a sum of 36 rupees amounts to 48.24 rupees after two years under simple interest, then what will 63 rupees amount to in three years at the same S.I?
Kiran deposited Rs 50000 in a bank at a simple interest rate of 20% for 3 years. How much more interest would she have accrued if she were to deposit the same amount at the same interest rate for the same period at compound interest?
If the difference in compound interest and simple interest for a principal amount of 5000 with a rate of 10% is 50. Find the duration for which interests were calculated?
