Question 1194989
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<pre>

Use the formula for simple interest  I = P*r*t.


Adopt it to your case

    150 = 600*0.05*t,


where "t" is the time in years.


From this equation, obtain the answer  t = {{{150/(600*0.05)}}} = 5 years.
</pre>


Solved.



There is another way to solve it without using equations.



<pre>
    At 5% annual interest, the principal of 600 units produces 600*0.05 = 6*5 = 30 units of interest each year.


    Hence, the interest of 150 units will be produced in  150/30 = 5 years.

    giving you the same answer.
</pre>

Solved twice, by two different methods, for your better understanding.


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To see many other similar &nbsp;(and different) &nbsp;solved problems on simple interest accounts, &nbsp;look into the lesson

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=https://www.algebra.com/algebra/homework/percentage/lessons/Simple-interest-percentage-problems.lesson>Simple interest percentage problems</A> 

in this site.



Learn the subject from there.