AQA Biology Unit 1 January 2012 - The Heart

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YeezyYeezy
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Can someone please explain how to work out question 5bi) on the aqa biol1 jan 2012...Thnaks
Paper: http://filestore.aqa.org.uk/subjects...1-QP-JAN12.PDF
MS: http://filestore.aqa.org.uk/subjects...W-MS-JAN12.PDF
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The heart completes a full cycle in 0.7 seconds and a minute is 60 seconds
so it's simply 60 divided by 0.7 to work out the beats per minute which comes out as 85.71
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