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Answer:
0.3 hours of oxygen use will be obtained from the 4.7 L tank.
Explanation:
The rule of three or is a way of solving problems of proportionality between three known values and an unknown value, establishing a relationship of proportionality between all of them. That is, what is intended with it is to find the fourth term of a proportion knowing the other three.
To solve a direct rule of three, where a, b and c are known data and x is the value to be calculated the following formula must be followed:
a ⇒ b
c ⇒ x
So [tex]x=\frac{c*b}{a}[/tex]
A value of 15 L/hour indicates that 15 L is consumed in 1 hour. The following rule of three can then be applied: if the average basal rate of oxygen consumption for an adult is 15 L in 1 hour, then 4.7 L in how long will it be consumed?
[tex]time=\frac{4.7 L*1 hour}{15 L}[/tex]
time= 0.3 hours
0.3 hours of oxygen use will be obtained from the 4.7 L tank.