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Chapter 7: Q. 263 (page 714)

Kevin wants to keep his heart rate at 160 beats per minute while training. During his workout he counts 27 beats in 10 seconds.

鈸� How many beats per minute is this?

鈸� Has Kevin met his target heart rate?

Short Answer

Expert verified

鈸� 162 beats per minute.

鈸� No. Kevin didn't meet his target heart rate.

Step by step solution

01

Step 1. Given information

  • Kevin wants to keep his heart rate at 160 beats per minute while training.
  • During workout, Kevin counts 27 beats in 10 seconds.
02

Step 2. Required to find

鈸� How many beats per minute is 27 beats in 10 seconds

鈸� Has Kevin met his target heart rate of 160 beats per minute in above case.

03

Step 3. Converting Kevin's beats per second to beats per minute using proportionality

Let arepresent beats per minute. then, the required proportion is: 2710=a60

27脳6010=a

a=27脳6

a=162

04

Step 4. Comparing target heart rate with measured heart rate

Target heart rate is 160 beats per minute and measured heart rate is 162 beats per minute. Therefore, target is not met.

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