A Hose Can Fill a Swimming Pool in 18 Hours

question 85

Multiple Choice

A hose can fill a swimming pool in 18 hours.Another hose needs 3 more hours to fill the pool than the two hoses combined.How long would it take the second hose to fill the pool?

• A)9 hours
• B) 14 hours
• C) 18 hours
• D) 6 hours
• E) 12 hours

---

Definitions:

Aortic Semilunar Valve

A valve in the heart located between the left ventricle and the aorta that prevents blood from flowing back into the heart.

Mitral Valve

A valve in the heart that lets blood flow from the left atrium to the left ventricle, preventing backflow.

Tricuspid Valve

Valve closing the orifice between the right atrium and the right ventricle of the heart.

Pulmonary Semilunar Valve

A valve in the heart located between the right ventricle and the pulmonary artery, preventing backflow of blood into the heart.