Percentage Calculation

What is 20% of 150?

If 30% of a number is 45, what is the number?

If a shirt originally costs $40 and is now on sale for 25% off, what is the sale price?

If 15% of a class of 30 students are absent, how many students are present?

If a recipe calls for 2 cups of flour and you want to make half the recipe, how much flour do you need?

If a store raised the price of an item by 10% and the new price is $55, what was the original price?

If a student scored 80% on a test with 50 questions, how many questions did they answer correctly?

If a car depreciates by 15% each year, what will be its value after 3 years if it was originally priced at $20,000?

If a company's profits increased by 25% from last year and they made $500,000 this year, how much did they make last year?

If a bag contains 80 marbles and 20% of them are red, how many red marbles are there?