**Example 1**

Discount/Markup

Discount can be written as a percentage of the marked price.

Find the sale price if 15% discount is allowed
off marked price of $25.00

**Example 2**

Percentage Increase/Decrease

Last year a ticket to the football was $11.00. This year the price has been
increased by 10%. What is the price of a ticket this year?

**Example 3**

Bank Interest

This is an example of Simple Interest(see below for Compound Interest)

What interest will be paid on a deposit of $200 at 4% p.a. after

a) 1 year

b) 3 years

**Example 4**

Sometimes Compound Interest is paid instead of Simple Interest.

Each year the interest is worked out using the Principal + Interest, where in this case
the Principal is the $200 and in the first year the Interest is the $8.00 at the rate of
4% per annum.

2nd Year:

**Example 5**

Commission

A salesman is on a commission rate of 5%. How much commission does he make on
sales worth $1500?