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13 votes
13 votes
Do number 8 and 9 please

Do number 8 and 9 please-example-1
User Aleksei Shestakov
by
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1 Answer

25 votes
25 votes

Solution (8):

Note that:

  • 0.5 miles = 8.5 minutes

Finding out how much miles in 1 minute:

  • 0.5 miles = 8.5 minutes
  • => 0.5/8.5 = 1 minute
  • => 1/17 miles = 1 minute

Hence, the unit rate in miles per minute is 1/17 miles per minute.

Solution (9):

Note that:

  • 7/8 square yards = 1/20 hours

Finding, how much yards in 1 hour:

  • 7/8 square yards = 1/20 hours
  • => 7/8 x 20 square yards = 1/20 x 20 hour
  • => 7/2 x 5 square yards = 1 hour
  • => 35/2 yards² = 17.5 yards² = 1 hour

Hence, the unit rate in square yards per hour is 17.5 square yards per hour.

User Akshay Sehgal
by
2.6k points