Emily had 30 cookies to bring to school for her birthday . Three students wanted two cookies each . Then, a new student came to school that day and he wanted three cookies. Then, one of the three kids gave two cookies back . Emily was still passing out cookies . How many cookies did Emily have left to pass out after the students gave theirs back
You said one of the three students gave back two cookies, but since the new student joined there is now four.
+37093 She starts with 30 gives out 3 x 2 and another 3 x 1 gets 2 back
30 - (3x2) - (3x1) + 2 = 30-6-3+2 = 23 cookies left
IF only one gave their cookies back. (The question asks 'after the studentS gave THEIRS back')
