Javier's heart beats 15 times in 20 seconds. What is his beats per minute?

15 times in 20 second

1 time = 4/3

Seconds in a minute= 60 seconds

45 beats per minute!

Explanation:

60 seconds = 1 minute

15 x 3 = 45

therefore, its 45 beats per minute!

also, next time put this in math subject instead!!

your answer is rna to the question.

oxygen = 21% of the atmosphere

nitrogen = 78%

carbon dioxide = 0.1%

argon =0.934%