Yuchen H.

asked • 09/24/17

What annual rate did the 1973 buyer earn on his purchase?


A coin that was featured in a famous novel sold at auction in 2014 for $3,450,000. The coin had a face value of $10 when it was issued in 1789 and had previously been sold for $395,000 in 1973.

1 Expert Answer

By:

Andrew M. answered • 09/24/17

Tutor
New to Wyzant

Mathematics - Algebra a Specialty / F.I.T. Grad - B.S. w/Honors

Yuchen H.

how about the rate?
 
I am still having problem with rate of return 
Report

09/24/17

Andrew M.

Assuming we can use simple interest since this
was not an investment in an account or cd:
I = prt
I = interest (or profit nere)
r = to be found
t = 41 yeats
 
3054990 = 395000(r)(41)
 
r = 3054990/[(395000)(41)]
 
r = 0.18864 = 18.9%
 
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09/25/17

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