S1 Percentages

In a school, 40% of the students are boys and 570 students are girls. How many boys are there in the school?

• 228

• 342

• 380

• 950

Tags

CCSS.6.RP.A.3C

Find the percentage change when 50 is changed to 140.

• +40%

• +64%

• +80%

• +180%

Tags

CCSS.6.RP.A.3C

In a school, there are 950 students, of whom 40% are boys. If 35% of the boys do not join any sports teams, find the number of boys who are members of sports teams.

• 133

• 200

• 247 

• 371

Tags

CCSS.6.RP.A.3C

If B is 60% more than A, then A is

• 37.5% less than B.

• 37.5% of B.

• 60% less than B.

• 60% of B.

Tags

CCSS.6.RP.A.3C

There are 40 yellow and blue A4 files in a tray. If the number of yellow A4 files is 50% more than that of blue A4 files, how many yellow A4 files are there in the tray?

• 13

• 16

• 24

• 27

Tags

CCSS.6.RP.A.3C

The average temperature on Friday was 24°C, and had fallen by 25% as compared with Thursday. What was the average temperature on Thursday?

• 18°C

• 19.2°C

• 30°C

• 32°C

Tags

CCSS.6.RP.A.3C

If a number is increased by 20% and then decreased by 20%, it becomes 48. What is the original number?

• 46

• 48

• 50

• 56

Tags

CCSS.6.RP.A.3C