Ch. 5 MC quiz2

In the preliminary round of a singing contest, 5 of the 25 participants reach the final. What percentage of the participants reach the final?

• 5%
• 15%
• 20%
• 50

In a school of 360 students, the number of boys is 80% of that of girls. Find the number of girls in the school.

• 72
• 160
• 200
• 288

The height of a boy increases from 120 cm to 150 cm. Find the percentage increase in the height.

• 20%
• 25%
• 30%
• 80%

Brian has 300 books, in which 20% are textbooks and 24% are comic books. By what percentage is the number of comic books more than that of textbooks?

• 4%
• 20%
• 24%
• 120%

John used $144 to buy a book. One year later, he sold the book at a price of $108. Find the loss per cent.

• 25%
• 50%
• 36%
• 75%

Eason sells two vases for $6 000 each. He gains 20% on one and loses 20% on the other. After the two transactions, Eason

• loses $500.
• gains $1 200.
• loses $2 400.
• has no gain and no loss.

Mike buys a pair of jeans at a 40% discount. If he saves $240, find the marked price of the jeans.

• $400
• $600
• $680
• $1 000

• A
• B
• C
• D

There are 25 green cards and 15 yellow cards in a box. What percentage of yellow cards is in the box?

• 37.5%
• 40%
• 60%
• 62.5%

A scarf marked at $480 is sold for $384. Find the discount per cent.

• 20%
• 25%
• 75%
• 80%