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: 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


[Q]: Problem: an escalator moves towards the top level at the rate of 12 ft . sec and its length is 160 feet . if a person walks on the moving escalator at the rate of 8 feet per second towards the top level , how much time does he take to cover the entire length . 
Options: a ) 10 sec , b ) 8 sec , c ) 9 sec , d ) 7 sec , e ) 12 sec
[A]: b


[Q]: Problem: the banker â € ™ s discount of a certain sum of money is rs . 60 and the true discount on the same sum for the same time is rs . 54 . the sum due is 
Options: a ) 210 , b ) 280 , c ) 360 , d ) 720 , e ) none
[A]:
d