Mathematics for IGCSE & O level - Limits Of Accuracy (Section 3 - No. 14)
If a speed is calculated by dividing distance (14.2 km to 3 s.f.) by time (46 minutes to the nearest minute), what should be done to work out the lower bound speed?
Divide 14.15 by 45.5
Divide 14.25 by 46.5
Divide 14.15 by 46.5
Divide 14.25 by 45.5
Explanation
For the lower bound speed, you take the lower bound of the distance and divide it by the upper bound time.
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