Kathleen uses the number sentence `10 xx 6 = 60` to solve a problem.
Which problem could she solve with this number sentence?

Kathleen has 10 sandwiches and gives 6 to her friends. How many sandwiches are left? 


Kathleen has 10 friends and buys 6 sandwiches for each of them. How many sandwiches did she buy? 


Kathleen has 6 friends and shared 10 sandwiches with them. How many sandwiches did each friend eat? 


Kathleen has 10 sandwiches and gets 6 more sandwiches. How many sandwiches does she have now? 