Arithmetic
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Q. A teacher has an average score of 85 in her class. If she adds a new student who scores 95, how will the average change if the class size increases from 10 to 11?
Q. A train leaves a station and travels at a speed of 90 km/h. How far will it travel in 2.5 hours?
Q. A train leaves a station and travels at a speed of 90 km/h. How long will it take to travel 270 km?
Q. A train travels 120 km at a speed of 60 km/h. How long does it take to complete the journey?
Q. A train travels at a speed of 80 km/h. How far will it travel in 2.5 hours?
Q. A train travels at a speed of 90 km/h. How long will it take to cover a distance of 450 km?
Q. A wholesaler sells a batch of goods for $1200, which includes a profit of 20%. What was the cost price of the goods?
Q. A wholesaler sells a product to a retailer at a price of $400, which includes a profit margin of 25%. What was the cost price for the wholesaler?
Q. A wholesaler sells a product to a retailer at a price that includes a 20% profit margin. If the retailer sells it at a 10% loss, what is the retailer's selling price if the cost price for the wholesaler is $200?
Q. A wholesaler sells a product to a retailer for $200, which is a 20% profit on the cost price. What is the cost price of the product?
Q. If 10 liters of a solution contains 30% salt, how much salt is present in the solution?
Q. If 5 liters of a 20% solution is mixed with 15 liters of a 30% solution, what is the percentage concentration of the resulting mixture?
Q. If 60% of a mixture is liquid X and the rest is liquid Y, what is the ratio of liquid Y to liquid X?
Q. If a book costs $15 and is on sale for 20% off, what is the sale price?
Q. If a box contains 3 red balls and 2 blue balls, what is the probability of randomly selecting a red ball?
Q. If a car travels 60 km in 1 hour and 30 minutes, what is its average speed in km/h?
Q. If a car's value depreciates by 10% each year, what will be its value after 3 years if its current value is $20,000? (2023)
Q. If a customer buys two items for $150 each and receives a 10% discount on the total, what is the total amount paid?
Q. If a customer buys two items priced at $50 and $70 respectively, and receives a total discount of 20% on the total price, what is the amount paid?
Q. If a customer buys two items priced at $50 each and receives a 20% discount on the total, how much does he pay?
Q. If a customer buys two shirts for $50 each and receives a discount of 10% on the total, what is the total amount paid?
Q. If a discount of 15% on a product results in a selling price of $85, what was the original price?
Q. If a loan of $5000 is taken at a simple interest rate of 6% per annum, how much interest will be paid after 4 years?
Q. If a mixture contains 20% alcohol and 80% water, how much alcohol is present in 50 liters of the mixture?
Q. If a mixture contains 20% sugar and 80% water, how much sugar is in 50 grams of the mixture?
Q. If a mixture contains 20% sugar and 80% water, how much sugar is there in 50 liters of the mixture?
Q. If a mixture contains 20% sugar and the total weight is 200 grams, how much sugar is in the mixture?
Q. If a mixture contains 40% alcohol and 60% water, how much alcohol is present in 15 liters of the mixture?
Q. If a mixture contains 40% alcohol and 60% water, how much water is present in 15 liters of the mixture?
Q. If a mixture contains 40% alcohol and 60% water, how much water is present in 50 liters of the mixture?
