Respuesta :
Answer:
boys = 600 and girls = 800
Step-by-step explanation:
take the 3:4 ratio and add together = 7
then divide the total (1400) by 7 = 200
to find the boys multiple 3 * 200 = 600
to find the girls multiple 4 * 200 = 800
800 + 600 = 1400