Agustin can hold his breath for 90 seconds at a time. He did this 5 times this week. He used fractions and multiplication to calculate how many minutes he held his breath this week in total.

Question

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90 seconds is equivalent to

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minutes.

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The mixed number above multiplied by 5 is
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minutes.

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Answer 1

90 seconds is equivalent to 1.5 minutes (since there are 60 seconds in a minute).

So, Agustin held his breath for a total of 1.5 minutes each time he did it. Multiplying by 5 times, we get:

1.5 minutes x 5 = 7.5 minutes

Therefore, Agustin held his breath for a total of 7.5 minutes this week.