In this task, you need to provide the correct option for a given problem from the provided options.
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Question: Problem: sara bought both german chocolate and swiss chocolate for some cakes she was baking . the swiss chocolate cost $ 2.5 per pound , and german chocolate cost $ 1.5 per pound . if the total the she spent on chocolate was $ 30 and both types of chocolate were purchased in whole number of pounds , how many total pounds of chocolate she purchased ? 
Options: a ) 7 , b ) 18 , c ) 10 , d ) 12 , e ) 11

Answer: b


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: in a college , the ratio of the number of boys to girls is 8 : 5 . if there are 160 girls , the total number of students in the college is 
Options: a ) 2447 , b ) 377 , c ) 667 , d ) 416 , e ) 871

Answer:
d