Exam-Style Question on Approximation
A mathematics exam-style question with a worked solution that can be revealed gradually
Question id: 167. This question is similar to one that appeared on a GCSE Higher paper (specimen) for 2017. The use of a calculator is not allowed.
Ayden is marking out the pitch for a ball game in a large field.
He measures the length of the pitch, which needs to be at least ten metres long, by pacing. Ayden knows that his stride length is 0.7 metres, rounded to the nearest tenth of a metre. Find the minimum number of strides Ayden will need to take to guarantee that the pitch is no shorter than ten metres long.
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