Mathematics for IGCSE & O level - Limits Of Accuracy (Section 2 - No. 16)
Don Quarie ran 100 m in 9.9 s (correct to 1 d.p.). If the speed = distance/time, what is the lower bound of Quarie's speed?
9.9 s
10.0 s
10.00 s
10.1 s
Explanation
Distance is 100m, between 99.5 and 100.5, and time is between 9.85 and 9.95s. To get the lowest bound, we use the lower bound of distance/upper bound of time 99.5/9.95
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