Answer:
0.09 l
Explanation:
Given:
900 ml ⇒ 10s
Required:
Liters per second
Analyze:
Let the unknown amount be x.
900 ml ⇒ 10s
x ⇒ 1s
Solve:
Use cross multiplication
900 × 1 = 10 × x
900 = 10x
Divide both sides by 10.
90 ml = x
To covert the answer into liters divide it by 1000.
0.09 l = x
Paraphrase:
We breathe 0.09 liters of air per second