instruction:
In this task, you need to provide the correct option for a given problem from the provided options.
question:
Problem: find the ratio between 1 hr 30 minutes and 2 hrs 40 minutes . 
Options: a ) 9 : 16 , b ) 5 : 9 , c ) 12 : 17 , d ) 13 : 24 , e ) none of these
answer:
a


question:
Problem: the compound ratio of 2 / 3 , 6 / 7 , 1 / 3 and 1 / 8 is given by ? 
Options: a ) 1 / 49 , b ) 1 / 42 , c ) 1 / 09 , d ) 1 / 77 , e ) 1 / 12
answer:
b


question:
Problem: what number has a 5 : 1 ratio to the number 12 ? 
Options: a ) 22 , b ) 50 , c ) 88 , d ) 52 , e ) 60
answer:

e