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julsineya [31]
3 years ago
15

Oliver's grandfather invested $150 at 5% interest compounded quarterly. When Oliver inherited it, the amount was $6000. For how

many years had the $150 been invested?
Mathematics
1 answer:
madam [21]3 years ago
6 0
  <span>0.05/4=1.25% quarterly interest 
6000=150(1+0.0125)^n , n= number of quarters 
(1+0.0125)^n=6000/150=40 
n log (1.0125)=log 40 
n=296.95 quarters 
number of years=n/4=74.23 years. </span>
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