In this task, you need to provide the correct option for a given problem from the provided options.

[EX Q]: Problem: the ratio of the number of females to males at a party was 1 : 2 but when 4 females and 4 males left , the ratio became 1 : 3 . how many people were at the party originally ?
Options: a ) 20 , b ) 22 , c ) 24 , d ) 26 , e ) 28
[EX A]: c

[EX Q]: Problem: the ratio of 2 numbers is 4 : 6 and their h . c . f . is 8 . their l . c . m . is ?
Options: a ) 20 , b ) 24 , c ) 52 , d ) 96 , e ) 60
[EX A]: d

[EX Q]: Problem: find the ratio in which rice at rs . 7.20 a kg be mixed with rice at rs . 5.80 a kg to produce a mixture worth rs . 6.30 a kg ?
Options: a ) 5 : 9 , b ) 2 : 3 , c ) 3 : 4 , d ) 4 : 5 , e ) none of these
[EX A]:
a