Percentage Problems

Front

What is a percentage?

Back

A percentage is a way of expressing a number as a fraction of 100. It is often used to compare values or show how much something has increased or decreased.

Front

How do you calculate a percentage of a number?

Back

To calculate a percentage of a number, multiply the number by the percentage (in decimal form). For example, to find 20% of 50, calculate 50 x 0.20 = 10.

Front

What does it mean to increase a value by a percentage?

Back

Increasing a value by a percentage means adding that percentage of the original value to itself. For example, increasing $100 by 20% means adding $20, resulting in $120.

Front

What does it mean to decrease a value by a percentage?

Back

Decreasing a value by a percentage means subtracting that percentage of the original value from itself. For example, decreasing $100 by 20% means subtracting $20, resulting in $80.

Front

If a stock is worth $500 and increases by 20%, what is its new value?

Back

The new value is $600. (Calculation: $500 + ($500 x 0.20) = $600)

Front

If a game costs $40 and is on sale for 40% off, how much do you pay?

Back

You pay $24. (Calculation: $40 - ($40 x 0.40) = $24)

Front

Rêveur received 60% of the house points. If Rêveur got 36 points, how many points did Isibindi and Altruismo receive together?

Back

Isibindi and Altruismo received 4 points together. (Isibindi got 3 points and Altruismo got 1 point.)

Front

If a stock worth $400 increases by 25% and then decreases by 30%, what is its value?

Back

The value is $350. (Calculation: $400 + ($400 x 0.25) = $500; $500 - ($500 x 0.30) = $350)

Front

What is the final price of a $50 meal after a 20% discount and a 30% tip?

Back

The final price is $52. (Calculation: $50 - ($50 x 0.20) = $40; $40 + ($40 x 0.30) = $52)

Front

What is the formula to find the final price after applying a discount?

Back

Final Price = Original Price - (Original Price x Discount Percentage)