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'.

Problem: a , b , and c started a partnership business by investing $ 45,000 , $ 63,000 , and $ 72,000 respectively . at the end of the year , the profit was distributed among them . if c ' s share of profit is $ 24,000 , what is the total profit ? 
Options: a ) $ 48,000 , b ) $ 52,000 , c ) $ 56,000 , d ) $ 60,000 , e ) $ 64,000
d

Problem: the banker ' s gain of a certain sum due 2 years hence at 10 % per annum is rs . 24 . the present worth is : 
Options: a ) rs . 608 , b ) rs . 6076 , c ) rs . 600 , d ) rs . 602 , e ) rs . 601
c

Problem: find the compound interest on $ 16,000 at 20 % per annum for 9 months , compounded quarterly 
Options: a ) 2532 , b ) 2552 , c ) 2524 , d ) 2522 , e ) 2512

d