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'.

Q: Problem: a man walking at a rate of 15 km / hr crosses a bridge in 20 minutes . the length of the bridge is ? 
Options: a ) 1250 m , b ) 1110 m , c ) 950 m , d ) 1000 m , e ) 1300 m

A: d
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Q: Problem: john makes $ 60 a week from his job . he earns a raise and nowmakes $ 70 a week . what is the % increase ? 
Options: a ) 16 % , b ) 16.66 % , c ) 17 % , d ) 17.2 % , e ) 18 %

A: b
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Q: Problem: the present population of a town is 1240 . population increase rate is 4 % p . a . find the population of town after 1 years ? 
Options: a ) 990 , b ) 1215 , c ) 1345 , d ) 1142 , e ) 1290

A:
e
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