Solve the Problem $1200 \mathrm {~L} / \mathrm { hr }$

question 438

Multiple Choice

Solve the problem.
-Twice the water flow in the hot-water pipe is the same as three times the flow in the cold-water pipe. The combined flow is $1200 \mathrm {~L} / \mathrm { hr }$ . What is the flow in each pipe?

• A) \(400 \mathrm {~L} / \mathrm { hr }\) hot; \(600 \mathrm {~L} / \mathrm { hr }\) cold
• B) \(480 \mathrm {~L} / \mathrm { hr }\) hot; \(720 \mathrm {~L} / \mathrm { hr }\) cold
• C) \(600 \mathrm {~L} / \mathrm { hr }\) hot; \(400 \mathrm {~L} / \mathrm { hr }\) cold
• D) \(720 \mathrm {~L} / \mathrm { hr }\) hot; \(480 \mathrm {~L} / \mathrm { hr }\) cold

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Definitions:

Styrene

An organic compound used in the production of polystyrene plastics and resins, characterized by its oily texture and sweet smell.

Polymerization Mechanism

A process by which monomer units are chemically bonded together to form polymer chains, governed by various types of reactions such as addition or condensation.

Monomer Structure

The basic unit or building block that can be repeated to form polymers through chemical bonds.

Polyurethane

A polymer composed of organic units joined by carbamate (urethane) links, used in foams, elastomers, and coatings.