Edexcel IGCSE Maths复习笔记 1.14.1 Exchange Rates

Edexcel IGCSE Maths复习笔记 1.14.1 Exchange Rates

Simplifying exchange rate questions

Use ratios!

  1. Put exchange rates in ratio form (use more than one line if necessary)
  2. Add lines for prices/costs
  3. Use scale factors to complete lines
  4. Pick out the answer!

It can be that simple! 

Worked Example
转载自savemyexam
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