SOLUTION: how long would $1250 have to be deposited at 6% per annum to gain a simple interest of $750?

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Question 1129956: how long would $1250 have to be deposited at 6% per annum to gain a simple interest of $750?
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

s+=+750
Rate of interest +r=+6% p.a.
Principal = p+=+1250$ (money deposited )
Let the time taken , t+years
By formula,
s=%28p%2Ar%2At%29%2F100+
Thus, s%2A100+=+p%2Ar%2At+ [ cross multiplication ]
=>%28s%2A100%29%2F%28p%2Ar%29+=+t [ dividing both sides by+p%2Ar+]
=>t+=+%28750%2A100%29%2F%281250%2A6%29

=>t+=+10+
Thus, time taken is 10 years. ( ans. )