alleryA basket holds 20 apples and 5 oranges. The ratio of oranges to apples in simplest form is:
A4 : 1
B1 : 5
C5 : 4
D1 : 4
Answer & Solution
Correct answer: D. 1 : 4
1. Write the ratio in the order asked, oranges first: 5 : 20.
2. Divide both sides by their HCF, which is 5.
3. That gives 1 : 4.
4. So the number of oranges is one fourth the number of apples.
5. 4 : 1 is the same comparison reversed, which is the commonest error on ratio questions.
_Source: syllabus Maths, Ch 7 'Comparing Quantities', S7.1 Recalling Ratios and Percentages_
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