Task: Question Answering
Input (English): Problem: according to the directions on a packet of smoothie mix , 1 3 - ounce packet of smoothie mix is to be combined with 15 ounces of water to make a smoothie . how many 3 - ounce packets of smoothie mix are required to prepare 150 12 - ounce smoothies ? 
Options: a ) 120 , b ) 150 , c ) 180 , d ) 240 , e ) 600
Output (English): c