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 $30 and both types of chocolate were purchased in whole number of pounds, how many total pounds of chocolate she purchased?  Choose the correct choice from the following answers.
A) 7  B) 18  C) 10  D) 12  E) 11
If there were all the expensive ones 2.5....   There would be 30/2.5 or 12 of them but since 1.5$ ones are also there, answer has to be &gt;12....   If all were 1.5$ ones, there will be 30/1.5 or 20...   So ONLY 18 is left   Ans 18..
<result>B</result>
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?