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 technician makes a round - trip to and from a certain service center by the same route . if the technician completes the drive to the center and then completes 50 percent of the drive from the center , what percent of the round - trip has the technician completed ? 
Options: a ) 70 , b ) 65 , c ) 60 , d ) 75 , e ) 80

A: d
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Q: Problem: the cost price of a radio is rs . 4800 and it was sold for rs . 4400 , find the loss % ? 
Options: a ) 8 , b ) 9 , c ) 7 , d ) 6 , e ) 4

A: a
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Q: Problem: the population of a village is 12000 . it increases annually at the rate of 24 % p . a . what will be its population after 2 years ? 
Options: a ) 14567 , b ) 18451 , c ) 18789 , d ) 18786 , e ) 14400

A:
b
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