Notes and Example

[size=150][b][u][size=200]PROPORTION[/size][/u][/b][/size]
What is proportion?
[list][*]Comparing two quantities or numbers [/*][*]Showing equality between two ratios[/*][/list]How to read:[br][color=#0000ff]4kg[/color] of biscuits costing [color=#ff7700]RM58[/color] is proportional to [color=#ff0000]2kg[/color] of biscuits costing[color=#00ff00]RM29[/color][br] [color=#0000ff]4kg[/color]:[color=#ff7700]RM58[/color] [color=#ff0000] 2kg[/color]:[color=#00ff00]RM29[/color]
Contoh 1
[size=100][b]Calculate the mass of butter for 2 batches of batik cake[br][br]Step 1:[br]Write the ratio of the mass of butter for 2 cups of cooking chocolate[br][br]1 cup of cooking chocolate 200 g butter[br][br]2 cups of cooking chocolate ? g butter[br][br]Step 2:[br]Calculate the mass of butter[br][br]200 g [math]\times[/math]2= 400 g[br][br]Answer:[br]The mass of butter for 2 batches of the recipe is[color=#0000ff] 400 g[/color][/b][/size]
Contoh 2
[size=150][b]Calculate the price for 2 kg 400g green beans[/b][/size][br]2kg 400g=2kg +400g[br][br][justify][b][size=100]Step 1:[br]Write the ratio for price and mass in the scale.[/size][/b][/justify][table][tr][td]1kg[math]:RM8.5[/math][/td][td][br][/td][/tr][tr][td]2kg[math]:2\times RM8.5=RM17[/math][/td][td][br][/td][/tr][/table][br][table][tr][td]1000g[math]:RM8.5[/math][/td][td][/td][/tr][tr][td]100g[math]:RM0.85[/math][/td][td][/td][/tr][/table][table][tr][td]400g[math]:4\times RM0.85=RM3.40[/math][/td][td][br][/td][/tr][/table][justify][/justify][size=100][b]Step 2 :[/b][/size][table][tr][td][b][/b][/td][td][br][/td][/tr][tr][td]RM17+RM3.4=RM20.40[/td][td][br][/td][/tr][/table][br][justify][b][/b][/justify][size=100][justify][b]Answer:[br]Price for 2kg 400g green beans is [color=#0000ff]RM 20.40[/color][/b][/justify][/size]

Information: Notes and Example