Revision: Year 11 Applications

Substitution

If b = 2 and a = - 4 , find the value of

Spreadsheets

Write down a formula that could be used to calculate the value in cell B5.

Pythagoras Show how you would determine the height of a POD mathematically. Then test your answer by eating half of it and measuring.

Percentages a) 12% of a quantity is $45. Calculate the total amount.

b) A washing machine with a market price of $440 is discounted by 20%. Determine the new price.

c) Target originally advertised a dress for $60. It was then discounted by 15%. As it still had not sold it was then marked with a further discount of 20% on the already reduced price. Determine the new sale price and the overall percentage reduction in cost.

Profit and Loss

Connor bought a car and then sold it to Daniel for $7200 (a 15% profit – sorry Daniel). What did Connor pay for the car?