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: a man walking at a rate of 15 km / hr crosses a bridge in 10 minutes . the length of the bridge is ? 
Options: a ) 500 m , b ) 1110 m , c ) 950 m , d ) 1000 m , e ) 1300 m
answer:
a


question:
Problem: a man can row his boat with the stream at 6 km / h and against the stream in 3 km / h . the man ' s rate is ? 
Options: a ) 1.5 kmph , b ) 3 kmph , c ) 8 kmph , d ) 7 kmph , e ) 5 kmph
answer:
a


question:
Problem: a store sells chairs and tables . if the price of 2 chairs and 1 table is 60 % of the price of 1 chair and 2 tables , and the price of 1 table and 1 chair is $ 72 , what is the price , in dollars , of 1 table ? ( assume that every chair has the same price and every table has the same price . ) 
Options: a ) 55 , b ) 84 , c ) 63 , d ) 75 , e ) 70
answer:

c