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The number of people watching a football match is 30000, correct to the nearest thousand - OCR - GCSE Maths - Question 17 - 2023 - Paper 3

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The number of people watching a football match is 30000, correct to the nearest thousand. (a) Complete the error interval for n, the number of people watching the f... show full transcript

Worked Solution & Example Answer:The number of people watching a football match is 30000, correct to the nearest thousand - OCR - GCSE Maths - Question 17 - 2023 - Paper 3

Step 1

Complete the error interval for n, the number of people watching the football match.

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Answer

When rounding to the nearest thousand, the range of possible values for n can be determined.

The lower bound is calculated as:

30000500=2950030000 - 500 = 29500

The upper bound is calculated as:

30000+500=3050030000 + 500 = 30500

Thus, the error interval for n is:

29500leqn<3050029500 \\leq n < 30500

Step 2

Show that fewer people could be watching the rugby match than the football match.

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Answer

The number of people watching the rugby match is given as 30500, correct to the nearest hundred.

To find the range of possible values for this figure, we calculate:

Lower bound:

3050050=3045030500 - 50 = 30450

Upper bound:

30500+50=3055030500 + 50 = 30550

Therefore, the range of people watching the rugby match is:

30450leqm<3055030450 \\leq m < 30550

Now, we will compare this with the football match's interval, which is:

29500leqn<3050029500 \\leq n < 30500

Since the upper limit of the football match (30500) is equal to the lower limit of the rugby match (30450), it can be concluded that

n<30500n < 30500

Thus, we find that the number of people watching the rugby match can be as low as 30450, which is greater than the lower limit of the football match at 29500. Therefore, it is evident that fewer people could be watching the rugby match than those watching the football match.

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