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Percentage Calculations and Pricing Adjustments Quiz

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#1

What is 20% of 150?

30
Explanation

20% of 150 is 30.

#2

If the price of a product is increased by 15%, by how much percent should it be decreased to bring it back to its original price?

13%
Explanation

To negate a 15% increase, decrease by 13%.

#3

If a student scores 75 out of 100 in a test, what is the percentage score?

75%
Explanation

75 out of 100 is 75%, a simple percentage calculation.

#4

If a recipe calls for 2 cups of flour and you only have 1 cup, what percentage of the flour do you have?

25%
Explanation

1 cup out of 2 is 50%, so 1 cup is 25% of 2 cups.

#5

If a book originally costs $40 and is discounted by 25%, what is the final price of the book?

$37.50
Explanation

25% discount is $10, so the final price is $40 - $10 = $30.

#6

If a shirt originally costs $40 and is discounted by 20%, what is the final price of the shirt?

$32
Explanation

20% off $40 leaves $32 as the final price.

#7

A computer originally priced at $1200 is on sale at a 10% discount. If the computer sells for $1080, what was the sale price?

20%
Explanation

The sale price is $1200 - $1080 = $120. So, 10% of $1200 is $120.

#8

A phone is sold for $200 after a 20% discount. What was its original price?

$240
Explanation

20% discount leaves 80%, so $200 is 80% of the original price.

#9

If a car's price is increased by 10% one year and then decreased by 10% the next year, what is the net percentage change in the price?

1% decrease
Explanation

The net effect is a 1% decrease in price.

#10

A store offers a 20% discount on all items. If a customer purchases a $50 item, how much money do they save?

$10
Explanation

20% of $50 is $10, so the customer saves $10.

#11

A company increased the price of a product by 25%. After a week, they decreased the price by 20%. What is the overall percentage change in the price?

5% increase
Explanation

The net effect is a 5% increase in price.

#12

The population of a city increased from 500,000 to 550,000 in one year. What was the percentage increase in population?

5%
Explanation

50,000 increase over 500,000 is a 10% increase.

#13

If a company's profit margin increases from 15% to 20%, what is the percentage increase in profit margin?

33.33%
Explanation

Increase from 15% to 20% is a 33.33% increase.

#14

If a product's price increased by 25% and then decreased by 20%, what is the net percentage change in price?

10% decrease
Explanation

25% increase followed by a 20% decrease yields a net 10% decrease.

#15

A company's revenue increased from $1,000,000 to $1,200,000 in a year. What was the percentage increase in revenue?

15%
Explanation

$200,000 increase over $1,000,000 is a 15% increase.

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