Question
Asked Dec 12, 2019
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Giuseppe decides that he really wants some ice cream, so he leaves the house at 3:00 p.m. and walks to the ice cream parlor. He arrives at 3:15 (the ice cream parlor is 6 blocks away). He buys an ice cream cone and sits down to eat it. At 3:45 he heads back home, arriving at 4:05. Find Giuseppe’s average walking rate in blocks per hour for each of the following situations.

  1. His trip to the ice cream parlor.

  2. His trip back home.

  3. The entire trip including the time spent eating.

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Expert Answer

Step 1

1.

To find the average walking rate of Giuseppe on his trip to the ice cream parlor, we use the time-distance formula.

Since the total distance travelled by him on his trip to ice cream parlor is 6 blocks and time taken by him is 15 minutes or (15/60) hour = 0.25 hour.

So his average walking speed can be calculated as:

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Total Distance travelled Walking rate : Total time taken 0.25 24 blocks per hour

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Step 2

2.

On his trip back home he travelled 6 blocks in 20 minutes. On converting the time in hours, he spent (20/60) hours = (1/3) hour in the trip back home.

So his average walking rate on his trip back home is

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Total Distance travelled Walking rate Total time taken 1/3 3 = 6. = 18 blocks per hour

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Step 3

On his entire trip, total distance travelled by him = 6 block + 6 block = 12 blocks

And total time spent by him including the time spend in eating is,...

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Total Distance travelled Walking rate = Total time taken 12 1.0833 =11.08 blocks per hour

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