Respuesta :

Answer:

252

Step-by-step explanation:

Girls = 84

Boys = 84 * 2 = 168

Total = 252

Answer:

Step-by-step explanation:

no of girls in grade 3 = 84

by the question no of boys are twice the number of girls so

no of boys = 2 * 84 = 168

Total no of pupil in grade 3

= 168 + 84

= 252

hope it will help :)