TASK DEFINITION: In this task, you need to provide the correct option for a given problem from the provided options.
PROBLEM: Problem: a man invests some money partly in 10 % stock at 90 and partly in 5 % stock at 90 . to obtain equal dividends from both , he must invest the money in the ratio : 
Options: a ) 1 : 2 , b ) 3 : 5 , c ) 4 : 5 , d ) 16 : 15 , e ) none

SOLUTION: a

PROBLEM: Problem: what is the square root of 625 , divided by 5 ? 
Options: a ) 9 , b ) 36 , c ) 5 , d ) 6 , e ) 1

SOLUTION: c

PROBLEM: Problem: the ratio of length to width of a rectangular showroom window is 3.3 to 2 . if the width of the window is 8 feet , what is the approximate length of the display in feet ? 
Options: ['a ) 7', 'b ) 11', 'c ) 13', 'd ) 16', 'e ) 26']

SOLUTION:
c