447,574 views
42 votes
42 votes
3 a. It takes Adriana 20 minutes to walk 5 blocks to the library. Complete the table of equivalent ratios to show Adriana’s two rates

b. Describe the rate that Adriana walks in blocks per minute and in minutes per block.
c. Adriana wants to know how many blocks she can walk in 45 minutes.
Explain why she can use her rate in blocks per minute to find the answer.

User Eitan Peer
by
2.5k points

2 Answers

21 votes
21 votes

Final answer:

Adriana's walking rate is 1 block per 4 minutes and 4 minutes per block. She can walk around 11 blocks in 45 minutes using her rate of blocks per minute. This concept is related to equivalent ratios.

Step-by-step explanation:

3a. Adriana walks 5 blocks in 20 minutes. So the equivalent ratios would be shown as follows:

  • 1 block = 20/5 = 4 minutes
  • 2 blocks = 2*4 = 8 minutes
  • 3 blocks = 3*4 = 12 minutes
  • 4 blocks = 4*4 = 16 minutes
  • 5 blocks = 5*4 = 20 minutes

Therefore, Adriana's rates are 1 block per 4 minutes and 4 minutes per block.

b. The rate at which Adriana walks is 1 block per 4 minutes (0.25 blocks/minute) and 4 minutes per block.

c. To know how many blocks Adriana can walk in 45 minutes, she can use the rate of blocks per minute. Let's calculate it:

Number of blocks = Total time / Time taken per block = 45/4 = 11.25 blocks

She can walk approximately 11 blocks in 45 minutes, since she can't walk a partial block.

Learn more about Equivalent Ratios

User Wviana
by
2.6k points
20 votes
20 votes

Answer:

It takes 4 minutes per block and she can walk 12.5 blocks in 45 minutes.

Step-by-step explanation:

20 / 5 = 4 minutes per block

20 + 20 + 5 = 45

5 + 5 + 2.5 = 12.5

Hope this helps, I did the test last year.

User Fandro
by
3.2k points