On March 24,2014,Chen and Mary borrow $18,000 each at a simple interest rate r = 12%.Chen's bank calculates interest using exact interest,while Mary's bank uses the Banker's Rule (ordinary interest).Let X = amount Chen pays back on September 24,2014,and Y = amount Mary pays back on September 24,2014.What is the value of X - Y?
A)-$15.12
B)-$8.88
C)$8.88
D)$15.12

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The Answer of On March 24,2014,Chen and Mary borrow $18,000 each at a simple interest rate r = 12%.Chen's bank calculates interest using exact interest,while Mary's bank uses the Banker's Rule (ordinary interest).Let X = amount Chen pays back on September 24,2014,and Y = amount Mary pays back on September 24,2014.What is the value of X - Y?
A)-$15.12
B)-$8.88
C)$8.88
D)$15.12

On March 24,2014,Chen and Mary Borrow $18,000 Each at a Simple