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: a sum of money at simple interest amounts to rs . 415 in 2 years and to rs . 514 in 4 years . the sum is ? 
Options: a ) rs . 316 , b ) rs . 251 , c ) rs . 154 , d ) rs . 294 , e ) rs . 200

Answer: a


Question: Problem: shawn invested one half of his savings in a bond that paid simple interest for 2 years and received $ 550 as interest . he invested the remaining in a bond that paid compound interest , interest being compounded annually , for the same 2 years at the same rate of interest and received $ 605 as interest . what was the value of his total savings before investing in these two bonds ? 
Options: a ) $ 2,750 , b ) $ 5,500 , c ) $ 11,000 , d ) $ 22,000 , e ) $ 44,000

Answer: a


Question: Problem: a man walking at a rate of 15 km / hr crosses a bridge in 15 minutes . the length of the bridge is ? 
Options: a ) 1250 m , b ) 1110 m , c ) 950 m , d ) 750 m , e ) 1300 m

Answer:
d