TASK DEFINITION: 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: Problem: shop offered 20 % offer for every shirt , smith bought a shirt at rs . 780 . and what was the shop ' s original selling price ? 
Options: a ) 500 , b ) 550 , c ) 600 , d ) 700 , e ) 975

SOLUTION: e

PROBLEM: Problem: last year a worker saved 15 % of her annual salary . this year , she made 20 % more money than last year and she saved 25 % of her salary . the amount she saved this year was what percent of the amount she saved last year ? 
Options: a ) 120 % , b ) 140 % , c ) 160 % , d ) 180 % , e ) 200 %

SOLUTION: e

PROBLEM: Problem: find the amount on rs . 5000 in 2 years , the rate of interest being 10 % per first year and 12 % for the second year ? 
Options: a ) 3377 , b ) 6160 , c ) 5460 , d ) 1976 , e ) 1671

SOLUTION:
b