If $100 invested at a certain rate of simple interest amounts to $140 at the end of 3 years,How much will $150 amount to at the same rate of interest in 6 years?
Answers:
A) $190
B) $180
C) $200
D) $240
E) $270
100 amounts to 140 in 3 years.   i.e (principal + interest ) on 120 in 3 years = 140   100 + 100*(r/100)*(3) = 140 =&gt; r = 40/3   150 in 6 years = principal + interest   = 150 + 150*(r/100)*(6)   = 270   Answer is $270.
<result>E</result>
If $100 invested at a certain rate of simple interest amounts to $140 at the end of 3 years,How much will $150 amount to at the same rate of interest in 6 years?