All Solutions

Exercise 1

Step 1

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In one minute, there are 4 cycles of 15 chest compressions and 2 rescue breaths. Thus, the total minutes is represented by $x$/ $4times15$.

Result

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Exercise 2

Step 1

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3 cycles of compressions lasts for $textit{45 seconds}$ because there are 4 cycles of compressions every 60 seconds (1 minute).

Result

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Exercise 3

Step 1

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In one minute, there are 4 cycles of 15 chest compressions.

$4times15times15 (minutes) = 900$

There are 900 compressions in 15 minutes.

Result

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900

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