Question

James's heart beats at 150 beats per minute when he is Jogging. How many beats would his heart have in 0.75 hours of jogging?

Answer 1

We have the rate at which Jame's heart beats:

`150\text{ beats per minute}`

And we need to find the number of beats of his heart in 0.75 hours of jogging.

Step 1. Convert 0.75 hours to minutes

Since we know that 1 hour has 60minutes, we need to multiply 0.75 by 60 to find the number of minutes that correspond to 0.75 hours:

`0.75hours*60\text{minutes}=45\text{ minutes}`

0.75 hours is equal to 45 minutes.

Step 2. Multiply the number of minutes (45) by the number of heartbeats per minute (the rate of Jame's heart beats).

Since his heart beats at 150 times per minute, and we need the number of heartbeats in 45 minutes, we multiply 150 by 45:

`150heartbeats*45\text{minutes}=6,750\text{heartbeats}`

Answer:

How many beats would his heart have in 0.75 hours of jogging?​

6,750