Answer:
8 ''A''-students out of 40 is bigger
Step-by-step explanation:
8 "A"-students out of 40:
=
= 20%
9 "A"-students out of 50:
= 18%
20% > 15%
<u>8 ''A''-students out of 40 is bigger</u>
There are 60 min per hour.
There are 24 hours in one day, so there are 60 times 24= 1,440 minutes in a day.
Person A: for 45 minutes per day had a heart rate of 150, and for 1,395 minutes per day had a heart rate of 60.
This means that her heart rate totaled (45x150) + (1,395x60) = 90,450 beats per day.
Person B: for 1,440 minutes per day had a heart rate of 72 beats per minute.
This means that her heart rate totaled (1,440x72) = 103,680 beats per day.
So for 365 days: 365(103,680-90,450)= 4,828,950-this is the number of beats MORE per year of Person B than Person A.
I'm not sure this is right, so please don't be mad if I got this completly wrong, but I think this is how you do it.

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