A car travels at an average speed of $78.1$ km/h for $2.55$ hours. By rounding these number

Question

A car travels at an average speed of $78.1$ km/h for $2.55$ hours. By rounding these numbers correct to $1$ significant figure, find an estimate of the distance travelled by the car. Show the numbers you use. [1] Without doing any further calculation, explain why the actual distance travelled by the car is less than the answer to part (a). [1]

Accepted Answer

(a) $240\text{ km}$. (b) Both positive factors were rounded upwards.

2023 BMSS EOY P2 Q2

2023 BMSS EOY P2 Q2

Solution:

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