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'.
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Question: Problem: in how many years rs 160 will produce the same interest at 8 % as rs . 500 produce in 4 years at 8 %
Options: a ) 13 , b ) 13.5 , c ) 11.5 , d ) 12.5 , e ) 12

Answer: d

Question: Problem: if the simple interest on a certain amount in at 4 % rate 5 years amounted to rs . 2080 less than the principal . what was the principal ?
Options: a ) 1500 , b ) 2600 , c ) 2507 , d ) 3200 , e ) 11500

Answer: b

Question: Problem: at what rate percent on simple interest will rs . 1750 amount to rs . 2000 in 2 years ?
Options: a ) 4 % , b ) 7.14 % , c ) 2 6 / 7 % , d ) 5 % , e ) 6 %

Answer:
b