Question

Harvey the wonder hamster can run 3 1/6 km in 1/4 hour. Harvey runs at a constant rate. Find his average speed in kilometers per hour.

Answer 1

`12(2)/(3)`

Explanation:

there are 4 quarters to 1 hour

3 1/6 x 4 =

19/6 * 4 = 76/6 = 12 4/6, reduces to 12 2/3 km per hour

Answer 2

12 2/3 km per hour

Explanation:

What is Harveys speed?

Take the distance and divide by the time

3 1/6 km

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1/4 hour

Change the mixed number to an improper fraction

3 1/6 = (6*3+1)/6 = 19/6

19/6 km

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1/4 hour

Copy dot flip

19/6 * 4/1 = 76/6 = 38/3 km/hr

3 goes into 38 12 times (12*3 = 36) with 2 left over

12 2/3 km per hour