Question

Jan has 18 muffins she gave her friend 9 how many dose Jan have in all

Answer 1

Jan has 18 muffins she gave her friend 9 how many dose Jan have in all???

Answer:
Jan has 18 in total

u didn't ask how many she has left. 
question is how many does Jan have in all???

Answer 2

jan would have 9 muffins left. because 18-9 is 9