Set Up an Equation That Can Be Used to Solve

question 35

Multiple Choice

Set up an equation that can be used to solve the problem. Solve the equation and answer the question asked.
-A retired couple has $210,000 to invest to obtain annual income. They want some of it invested in safe certificates of deposit yielding 6%. The rest they want to invest in AA bonds yielding 12% per year. How much
Should they invest in each to realize exactly $21,600 per year?

• A) $150,000 at 6%; $60,000 at 12%
• B) $160,000 at 12%; $50,000 at 6%
• C) $140,000 at 6%; $70,000 at 12%
• D) $150,000 at 12%; $60,000 at 6%

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Definitions:

PMI

Project Management Institute, a global organization that offers certifications and promotes standards for project management.

Relay Valve

In air brake systems, a valve that receives a control signal and then uses a local supply of air to send out to actuator devices. Most relay valves replicate the signal pressure valve to the out circuit, but some are designed to amplify or modulate the signal.

Exhaust Port

An opening through which exhaust gases are expelled from an engine or machinery.

Quick-release Valve

A quick-release valve is a valve mechanism designed to allow rapid release of pressure or contents from a system, used in applications like air braking systems in vehicles.