Exercising Julie found that her heart was beating 12 times every five seconds how many times was it beating per minute
12beats/5s * 60s/min = (12*60)/5 = 144 beats/min
To find out how many times Julie's heart was beating per minute, we need to convert the time interval from seconds to minutes. Here's how you can do it:
Step 1: Calculate the number of beats in one minute.
Since there are 60 seconds in a minute, we need to calculate the beats in 60 seconds.
Given: Julie's heart was beating 12 times every 5 seconds
To find beats in 60 seconds, we can set up a proportion:
12 beats / 5 seconds = x beats / 60 seconds
Cross-multiply: (12 beats) * (60 seconds) = (5 seconds) * (x beats)
Simplify: 720 beats = 5x
Step 2: Solve for x.
Divide both sides of the equation by 5:
720 beats ÷ 5 = x
x = 144 beats
Therefore, Julie's heart was beating approximately 144 times per minute.