Respuesta :
Answer:
29 students
Step-by-step explanation:
divide by 7 to get 1/9 then multiply by 9 to get total.
Answer:
27
Step-by-step explanation:
Let x be the total number of students. So, turning the words of the problem into an equation, we get:
7/9x = 21,
then, 7x = 189
so, x = 27.