At a bakery, Mina and Dan packed 35 cookies into two boxes. The numbers of cookies in the smaller box and the larger box were in the ratio 2 : 3. How many cookies were in the smaller box?
- 7 cookies
- 14 cookies
- 21 cookies
- 28 cookies
Need a hint?
Find the number of equal ratio parts first, then work out the size of one part.
Worked answer
- Total number of ratio parts: 2 + 3 = 5.
- Number of cookies in one part: 35 ÷ 5 = 7.
- Number of cookies in the smaller box: 2 × 7 = 14.
Answer: 14 cookies
The mistake this question tests
Habit
Stopped at one part in ratio
Choosing 21 cookies uses the 3 ratio parts for the smaller box, but the smaller box has only 2 parts.
How to fix it at home →More PSLE ratio questions
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See the answer →Practise PSLE ratio until the mistakes stop.
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