Respuesta :
First you divide 12 by 3 to get 4, and then you multiply 210 by 4 to get 840, which is answer C. This is because if it is 210 patients per 3 weeks, 3 goes into 12 weeks 4 times, so you need to multiply. I hope this helps!
210/3=x/12
cross multiply
3x=2520
divide by on each side
x=840
the doctor will see 840 patients in 12 weeks.
cross multiply
3x=2520
divide by on each side
x=840
the doctor will see 840 patients in 12 weeks.