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: sandy buys an old scooter for $ 800 and spends $ 200 on its repairs . if sandy sells the scooter for $ 1400 , what is the gain percent ? 
Options: a ) 20 % , b ) 30 % , c ) 40 % , d ) 50 % , e ) 60 %

A: c
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Q: Problem: raman ' s salary was decreased by 50 % and subsequently increased by 50 % . how much percent does he loss . 
Options: a ) 75 , b ) 65 , c ) 45 , d ) 25 , e ) 85

A: d
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Q: Problem: a dishonest dealer professes to sell goods at the cost price but uses a weight of 650 grams per kg , what is his percent ? 
Options: a ) 15 % , b ) 25 % , c ) 65 % , d ) 53.8 % , e ) 35 %

A:
d
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