 
 <prompt> A milk teas shop was able to sell a total of 50 cups of milk tea yesterday. Two-fifths of their sales are winter melon flavor, three-tenths are Okinawa flavor, and the rest are chocolate flavor. How many cups of chocolate-flavored milk tea were they able to sell yesterday? <response>: ```A cikin dukkan mai shayi na shayi sun yi 50 x 2/5 = 20 koppa da shayi na shayi mai ruwa na ruwa na ruwa.
Suna yi 50 x 3/10 = 15 koppa da shayi na shayi na Okinawa.
Don haka sun yi jumla na 20 + 15 = 35 koppa da shayi na ruwa na Okinawa.
Saboda haka sun yi 50 - 35 = 15 koppa da shayi na shayi na shayi na shayi.

Wani abu na farko: 15.``` 