Year 10 Interactive Maths - Second Edition

Percentage Increase

Example 10

The price of a printer increases from $400 to $550. Express this increase as a percentage of the original price.

Solution:

Problem Solving

Example 11

25% of a certain number is 56. Find the number.

Solution:

Example 12

A family spends 20 per cent of its income on mortgage repayments of $145 per week. Calculate the weekly income of the family.

Solution:

Key Terms

percentage increase

Study Another Topic in Chapter 7: Consumer Arithmetic

[ Percentages ] [ Changing a Percentage to a Decimal ] [ Changing a Decimal or Fraction to a Percentage ] [ Finding a Percentage of a Quantity ] [ Expressing a Quantity as a Percentage of Another Quantity ] [ Percentage Decrease ] [ Percentage Increase ] [ Loss ] [ Profit ] [ Simple Interest ] [ Calculating the Principal ] [ Calculating the Interest Rate ] [ Calculating the Time ] [ Loans ] [ Discount ] [ Commission ] [ Compound Interest ] [ Problem Solving Unit ] [ Symbols ] [ Index ]