This study notes covers Worked Example 2: Different Units within Ratio Problems for GCSE Mathematics. Revise Ratio Problems in Ratio & Proportion for GCSE Mathematics with 14 exam-style questions and 3 flashcards. This topic shows up very often in GCSE exams, so students should be able to explain it clearly, not just recognise the term. It is section 5 of 8 in this topic. Use this study notes to connect the idea to the wider topic before moving on to questions and flashcards.
Worked Example 2: Different Units
Simplify the ratio £1.50 : 75p
Step 1 Convert to same units
£1.50 = 150p
So ratio is 150p : 75p = 150:75
Step 2 Simplify (divide by HCF = 75)
150 ÷ 75 = 2
75 ÷ 75 = 1
Final Write answer
£1.50 : 75p = 2:1
Practice questions for Ratio Problems
A recipe uses flour and sugar in the ratio 5:2. What fraction of the mixture is flour?
The ratio of apples to oranges in a basket is 2:3. Sarah says "2/3 of the fruits are apples." Explain why Sarah is wrong.