instruction:
In this task, you need to answer the given multiple-choice question on the gain. Gain is the value by which to multiply the input. Classify your answers into 'a', 'b', 'c', 'd', and 'e'.
question:
Problem: peter invested a certain sum of money in a simple interest bond whose value grew to $ 100 at the end of 2 years and further to $ 200 at the end of another 4 years . what was the rate of interest in which he invested his sum ?
Options: a ) 50 % , b ) 25 % , c ) 10 % , d ) 30 % , e ) 18 %
answer:
a

question:
Problem: vijay sells a cupboard at 12 % below cost price . had he got rs . 1650 more , he would have made a profit of 12 % . what is the cost price of the cupboard ?
Options: a ) 7450 , b ) 14900 , c ) 7400 , d ) 6875 , e ) none of these
answer:
d

question:
Problem: a merchant marks his goods up by 50 % and then offers a discount of 20 % on the marked price . what % profit does the merchant make after the discount ?
Options: a ) 20 % , b ) 25 % , c ) 69 % , d ) 31 % , e ) 19 %
answer:
a