John is 22 years old . he counted his pulse for 10 seconds and got 12 beats ,using that data calculate his current heart rate

And the 1 points are for this 20 if i get all 3 of them correctly i will give you brainliest and if you only get all 3 i will give you brainliest including a and the rating will be 5 and if you get those i will give you 20 points