Respuesta :
Answer:
350
Step-by-step explanation:
If there are 210 girls, then the number of boys is (210÷3)x7=350.
There are 560 total students
210/3=70
5*70=350
Then you add 210 back to 350
210+350=560
Here’s a more detailed work
(The circled numbers are the order of my steps from 1to8
210/3=70
5*70=350
Then you add 210 back to 350
210+350=560
Here’s a more detailed work
(The circled numbers are the order of my steps from 1to8