AQA GCSE · Question 02 · Ratio Proportion and Rates of Change
1 pound = 16 ounces. Work out the number of ounces in 3 pounds.
How to approach this question
You are given that 1 pound is equal to 16 ounces. To find the number of ounces in 3 pounds, you need to multiply the number of ounces in one pound by 3.
Calculation: 16 ounces/pound × 3 pounds = 48 ounces.
Full Answer
This is a conversion problem. We are given the conversion factor: 1 pound = 16 ounces. We need to find the equivalent of 3 pounds in ounces.
Since 1 pound is 16 ounces, 3 pounds will be 3 times this amount.
So, we calculate 3 × 16.
We can break this down:
3 × 10 = 30
3 × 6 = 18
30 + 18 = 48
Therefore, there are 48 ounces in 3 pounds.
Common mistakes
✗ A common mistake is to divide instead of multiply (e.g., 16 ÷ 3).\n✗ Calculation errors are also possible, for example, 3 x 10 + 6 = 36.
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