At the End of April, Brad Had $7,500 in His

question 103

Multiple Choice

At the end of April, Brad had $7,500 in his daily interest savings account. On the 13^th of May he deposited another $3,500. He made no other deposits or withdrawals in May. The simple interest rate throughout May was 3.7%. How much interest did Brad earn on this savings account in May?

• A) $16.83
• B) $30.31
• C) $21.99
• D) $39.52
• E) $46.17

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Definitions:

Countercurrent Exchange

A mechanism occurring in nature and designed systems wherein two flowing bodies of water, air, or other substances move in opposite directions of each other to maximize the transfer rate of heat or matter.

Concurrent Exchange

A process in which two substances, such as blood and air in the lungs, flow in opposite directions to maximize the transfer of gases or other molecules.

Tracheal Tubes

A network of air tubes in insects that branch throughout the body for gas exchange.

Spiracles

External respiratory openings in insects and some amphibians and fish, used for breathing.