Question

If a bus travels 72m in 9 seconds then how much km it will travel in 1 hour​

Answer 1

Answer:

Rate X Time = Distance

10 x 2 = 20

20 x 1 = 20 so a total of 40 for the two segments

but taking the average rate:

15 x 3 = 45 (erroneous) QED

Answer 2

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Rate X Time = Distance

10 x 2 = 20

20 x 1 = 20 so a total of 40 for the two segments

but taking the average rate:

15 x 3 = 45 (erroneous) QED