Test 2. Percentage change

 1. 13 people in a class of 25 have blonde hair. What percentage of the class have blonde hair?

 а)  59%;      b)  46%;     

 c)  52%;      d)  54%.

 2. In a box of 20 chocolates, 14 of them are milk chocolates. What percentage are milk chocolates?  

 а)  70%;      b)  90%;     

 c)  85%;      d)  74%.

 3. In a server, 150 people were asked about smoking. 45 people said they smoke. The rest of the people said they do not smoke. What percentage of the people said they do not smoke?

 а)  74%;      b)  82%;     

 c)  79%;      d)  70%.

 4. Brenda saves £5 each week out of her Saturday job. If she gets paid £17.50, work out the percentage of her wage that she saves.

 а)  25%;      b)  29%;     

 c)  19%;      d)  22%.

 5. A chocolate bar weighs 68 g. If 47 g of the bar is nougat, work out what percentage of the bar is nougat.

 а)  64%;      b)  59%;     

 c)  69%;      d)  66%.

 6. A house costs £115,000. Sam must pay a deposit of £10,000. What is the deposit as a percentage of the total cost of the house?

 а)  2%;      b)  9%;     

 c)  7%;      d)  4%.

 7. Orange squash is to be made with 24 ml of juice and 126 ml water. What is the percentage of juice in the whole drink?

 а)  19%;      b)  29%;     

 c)  21%;      d)  17%.

 8. Eddie’s wages were increased from £120 to £129.60 per week. What was the percentage increase?

 а)  6%;      b)  2%;     

 c)  8%;      d)  9%.

 9. A CD player is bought for £60 and sold for £69. What is the percentage profit?

 а)  12%;      b)  15%;     

 c)  21%;      d)  19%.

10. Sandra’s weekly wage goes up from £240 to £252. What is the percentage increase?

 а)  7%;      b)  2%;     

 c)  9%;      d)  5%.

11. The value of a bike drops from £240 to £160 in one year. What is the percentage decrease in that year?

 а)  33¹/₂%;      b)  33,3%;     

 c)  33¹/₃%;      d)  33%.

12. The population of a country increases from 2,374,000 to 2,445,220. What is the percentage increase?

 а)  3%;      b)  2%;     

 c)  9%;      d)  6%.