Elvira was trying to find out the number of students in the courtyard during lunch. She doesn’t remember how many students were there to start, but knows how many students there were at the end of the lunch period. These are her observations: · The original students were joined by four more students. · Those students were each joined by 2 students, multiplying the students by 3. · Half the students left. If there were 15 students at the end of the lunch period, which equation would help Elvira find how many students were in the courtyard at the beginning of lunch?
SOMEONE, ANYONE PLEASE HELP ME WITH THIS QUESTION :(
ANYONE CAN HELP IF THEY WANT, PLEASE!!!!