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'.
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Question: Problem: today joelle opened an interest - bearing savings account and deposited $ 7,000 . if the annual interest rate is 5 percent compounded interest , and she neither deposits nor withdraws money for exactly 2 years , how much money will she have in the account ? 
Options: a ) $ 7727.50 , b ) $ 7717.50 , c ) $ 7737.50 , d ) $ 7747.50 , e ) $ 7757.50

Answer: b


Question: Problem: a man ' s speed with the current is 12 km / hr and the speed of the current is 2 km / hr . the man ' s speed against the current is 
Options: a ) 8 , b ) 10 , c ) 11 , d ) 12 , e ) 13

Answer: a


Question: Problem: a japanese rock band made ¥ 3 million on their first album with sales of ¥ 12 million , and made ¥ 5 million on their second album with sales of ¥ 30 million . by approximately what percent did the ratio of profit to sales decrease from the first album to second album ? 
Options: a ) 24 % , b ) 27 % , c ) 30 % , d ) 33 % , e ) 36 %

Answer:
d