1) 25%

2) 23.7%

3) 42.5%

4) -16%. The amount of water in the glass has decreased by 16%

5) -7.4%

6)

a) 37.2%

b) 88.4%

c) 137.6%

2) 23.7%

3) 42.5%

4) -16%. The amount of water in the glass has decreased by 16%

5) -7.4%

6)

a) 37.2%

b) 88.4%

c) 137.6%

**Working**

**Questions**

You may use a calculator for the following questions. Give all of your answers to one decimal place.

1) I am growing a pumpkin ready for Halloween. The mass of the pumpkin last week was 600 g. The mass of pumpkin this week is 750 g. What is the percentage change in the mass of the pumpkin?

2) A clothing store has a sale. The original price of a jumper was £19. The jumper during the sale is £14.50. What is the percentage reduction during the sale?

3) I place some dough in the fridge to rise. When I place the dough into the fridge, the volume of the dough was 20 square cm. When I take the dough out of the fridge, the volume is 28.5 square cm. What is the percentage change in the volume of the dough?

4) I leave a glass of water that contains 250 ml of water out in the sun. After an hour, there is 210 ml of water in the glass. What is the percentage change in the amount of water? Interpret your results.

5) I purchase a share in a company for £105.29. A week later, the share is worth £97.45. What is the percentage change in the value of the share?

6) I take a test twice. There are 43 questions on the math’s test. The first time that I took the test, I got 16 question right. The second time that I took the test, I got 38 questions right.

a) What percentage of the questions did I get right on the first test?

b) What percentage of the questions did I get right on the second test?

c) What is the percentage change in my results? Give your answer to the nearest whole percent.