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(a) Write 48 as a percentage of 200 - OCR - GCSE Maths - Question 3 - 2018 - Paper 1
Question 3
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(a) Write 48 as a percentage of 200.
(b) Work out \( \frac{1}{4} \) of 80.
(c) Decrease 650 by 40%.
Worked Solution & Example Answer:3
(a) Write 48 as a percentage of 200 - OCR - GCSE Maths - Question 3 - 2018 - Paper 1
Step 1
Write 48 as a percentage of 200.
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Answer
To find 48 as a percentage of 200, you can use the formula:
[ \text{Percentage} = \left( \frac{\text{Part}}{\text{Whole}} \right) \times 100 ]
Here, the Part is 48 and the Whole is 200:
[ \text{Percentage} = \left( \frac{48}{200} \right) \times 100 = 24% ]
Step 2
Work out \( \frac{1}{4} \) of 80.
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Answer
To find ( \frac{1}{4} ) of 80, you can multiply 80 by ( \frac{1}{4} ):
[ \frac{1}{4} \times 80 = 20 ]
Step 3
Decrease 650 by 40%.
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Answer
To decrease 650 by 40%, first calculate 40% of 650:
[ 0.40 \times 650 = 260 ]
Now, subtract this value from 650:
[ 650 - 260 = 390 ]
