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

[EX Q]: Problem: if the ratio of two number is 5 : 7 and lcm of the number is 320 then what is the number .
Options: a ) 15 , b ) 9 , c ) 10 , d ) 11 , e ) 35
[EX A]: b

[EX Q]: Problem: in township k , 1 / 5 of the housing units are equiped with cable tv . if 1 / 10 of the housing units , including 1 / 4 of those that are equiped with cable tv , are equipped with videocassette recorders , what fraction of the housing units have neither cable tv nor videocassette recorders ?
Options: a ) 3 / 4 , b ) 11 / 15 , c ) 7 / 10 , d ) 1 / 6 , e ) 2 / 15
[EX A]: a

[EX Q]: Problem: in a zoo , the ratio of the number of cheetahs to the number of pandas is 1 : 3 and was the same 5 years ago . if the increase in the number of cheetahs in the zoo since then is 2 , then what is the increase in the number of pandas ?
Options: a ) 2 , b ) 3 , c ) 5 , d ) 6 , e ) 15
[EX A]:
d