If $200 invested at a certain rate of simple interest amounts to $240 at the end of 3 years,How much will $150 amount to at the same rate of interest in 6 years? Options: A) $190 B) $180 C) $200 D) $240 E) $210
200 amounts to 240 in 3 years.   i.e (principal + interest ) on 120 in 3 years = 240   200 + 200*(r/100)*(3) = 240 =&gt; r = 20/3   150 in 6 years = principal + interest   = 150 + 150*(r/100)*(6)   =210   Answer is $210.
<result>E</result>
If $200 invested at a certain rate of simple interest amounts to $240 at the end of 3 years,How much will $150 amount to at the same rate of interest in 6 years?