Area and Percentages

40% of 200 =

• 80

• 120

• 150

• 240

Kelly gets 60 marks in the first mathematics test, and she gets 75 marks in the second test. Find the percentage increase in her test marks.

• 15%

• 20%

• 25%

• 30%

In a tutorial centre, the number of students increased by 40% to 280 from January to February. Find the number of students in the tutorial centre in January.

• 168

• 180

• 200

• 210

There were 2500 restaurants in a city last year. Find the percentage change in the number of restaurants if it is 2200 this year.

• -12%

• +12%

• -13.6%

• +13.6%

• A
• B
• C
• D

In a school, 75% of the students are girls.  If the number of boys is 375, how many students are there in the school?

• 1000

• 1125

• 1375

• 1500

150% of a number is 72.  Find the number.

• 28.8

• 36

• 48

• 108

If the length of each side of a square is decreased by 15%, find the percentage decrease in its area.

• 15%

• 22.5%

• 22.75%

• 32.25%

• 50%

• 150%

The shaded area on this graph shows how much of a computer file has loaded.

What percentage of the file has loaded?

• 55%

• 60%

• 65%

• 70%