Question

If the average basal rate of oxygen consumption for an adult is 15 L/hour, then calculate how many hours of oxygen use will you get from the 4.7 L tank? Round your answer to 1 decimal place.

Answer 1

0.3 hours of oxygen use will be obtained from the 4.7 L tank.

Step-by-step 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
`x=(c*b)/(a)`

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?

`time=(4.7 L*1 hour)/(15 L)`

time= 0.3 hours

0.3 hours of oxygen use will be obtained from the 4.7 L tank.