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: find the compound interest on $ 20000 in 2 years at 4 % per annum , the interest being compounded half - yearly ? 
Options: a ) $ 645.56 , b ) $ 1648.64 , c ) $ 954.26 , d ) $ 745.69 , e ) $ 1020.45

Answer: b


Question: Problem: at a particular graduation party with 220 guests , 70 % of the guests brought gifts , and 40 % of the female guests brought gifts . if 12 males did not bring gifts to the party , how many females did bring gifts ? 
Options: a ) 18 , b ) 36 , c ) 42 , d ) 68 , e ) 70

Answer: b


Question: Problem: find the simple interest on rs . 68,000 at 16 2 / 3 % per annum for 9 months . 
Options: a ) rs . 8500 , b ) rs . 8000 , c ) rs . 7500 , d ) rs . 7000 , e ) rs . 6500

Answer:
a