1. - B
A dress costs Dh In a sale it is reduced by Dh What is the new price? A
Reduction Dh ! N
Click for the solution / explanation
Underline the key words
Circle the numbers
Allocate letters
State the problem in mathematical terms
B = 180
A = 20
N = ???
Write down formula
B  A = N
B - A = N
Substitute
= N
Solve the equation
160 = N
%% Type 1 %%
Lukas van Veen
Write your answer as a sentence
The new price is Dh 160.

2. B
A clock costs Dh In a sale it is reduced by Dh What is the rate of discount? A R
Underline the key words
Circle the numbers
Discount of .....%
Allocate letters
State the problem in mathematical terms
B = 250
A = 50
R = ???
Write down formula
R = A  B
%% Type 1 %%
Lukas van Veen
Substitute
R = 50  250
Solve the equation
R = 50  250 x 100% = 20%
Write your answer as a sentence
The rate of discount is 20%.

3. %% Type 2 %% Lukas van Veen
A villa costs Dh After a year the villa is sold for 15% more. i What is the profit? ii What is the selling price? B R A N
Underline the key words
Try exercise 7.4:
Type 1 & 2
Questions
Circle the numbers
Allocate letters
State the problem in mathematical terms
B =
R = 15%
A = ? N = ?
Write down formulae
A = B x R
B  A = N
B + A = N
Substitute
A = x 15  100
A = N
Solve the equations
A =
= N
= N
Use a sentence
The profit is Dh , the selling price is Dh