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**Question**

5) A plane travels at a speed of 213 miles per hour.

(a) Work out an estimate for the number of seconds the plane takes to travel 1 mile.

(a) Work out an estimate for the number of seconds the plane takes to travel 1 mile.

............................ seconds

**[3 marks]**

(b) Is your answer to part (a) an underestimate or an overestimate?

Give a reason for your answer.

**[1 mark]**