Percentage Increase, Decrease, Error, Tax, Tip, Commission

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What is a percentage increase?

Back

A percentage increase is a way to express how much a quantity has grown compared to its original amount, calculated as (new value - original value) / original value x 100%.

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What is a percentage decrease?

Back

A percentage decrease is a way to express how much a quantity has reduced compared to its original amount, calculated as (original value - new value) / original value x 100%.

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How do you calculate sales tax?

Back

To calculate sales tax, multiply the price of the item by the sales tax rate (as a decimal). For example, for a $100 item with a 5% tax, the tax is $100 x 0.05 = $5.

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What is a tip?

Back

A tip is a small amount of money given to service workers as a token of appreciation for their service, often calculated as a percentage of the total bill.

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How do you calculate a tip?

Back

To calculate a tip, multiply the total bill by the tip percentage (as a decimal). For example, for a $50 bill with a 20% tip, the tip is $50 x 0.20 = $10.

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What is commission?

Back

Commission is a fee paid to an employee or agent based on the sales they generate, usually expressed as a percentage of the sales amount.

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How do you calculate total salary with commission?

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Total salary with commission is calculated by adding the fixed salary to the commission earned. For example, if the salary is $2000 and the commission is $600, total salary = $2000 + $600 = $2600.

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What is the formula to find the final price after tax?

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Final price = Original price + (Original price x Sales tax rate). For example, for a $100 item with a 5% tax, Final price = $100 + ($100 x 0.05) = $105.

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How do you convert a fraction to a percentage?

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To convert a fraction to a percentage, divide the numerator by the denominator and multiply by 100. For example, 3/4 = (3 ÷ 4) x 100 = 75%.

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What is the formula for calculating percentage?

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Percentage = (Part / Whole) x 100. For example, if you scored 45 out of 60, Percentage = (45 / 60) x 100 = 75%.