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34 votes
Drew studied for 2/8 of an hour for 4 days in a row. How many hours did he study?

Drew studied for 3/8 of an hour for 5 days in a row. How many hours did he study?
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Drew studied for 2/8 of an hour for 5 days in a row. How many hours did he study?
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Drew studied for 8 hours for 5 days in a row. How many hours did he study?

Drew studied for 2/8 of an hour for 4 days in a row. How many hours did he study? Drew-example-1
User Alex Fedoseev
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2.5k points

2 Answers

10 votes
10 votes

Step-by-step explanation:

1) We can start by simplifying the fraction 2/8 down to 1/4 by dividing the top and bottom by 2. From there, we know that there are 60 minutes in 1 hour, so we can find 1/4 of 60 minutes.

That is 15 minutes. Now it says that Drew did that 4 days in a row. Multiply 15 minutes by 4, and we will get 60 minutes, which equals 1 hour.

2) Now let's solve using the same process. 3/8 of an hour is 22.5 minutes which is 22 minutes and 30 seconds.

If he did this for 5 days in a row, lets multiply 22.5 by 5; that is 112.5 which is 112 minutes and 30 seconds. This is 1 hour 52 minutes and 30 seconds.

3) Now use the same process. 2/8 = 1/4. 1/4 of 60 minutes = 15.
15 x 5 = 75 minutes = 1 hour and 15 minutes.

4) 8 x 5 = 40 hours

User Thuan Nguyen
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2.9k points
13 votes
13 votes

Answer:

  • C. Drew studied for 2/8 of an hour for 5 days in a row. How many hours did he study?

Explanation:

According to the model we see:

  • 5 times double 1/8 or
  • 5*2/8

This is matching the option C

User Adam Joseph Looze
by
2.8k points