Answer:
La madre de Marta tiene 45 años.
Step-by-step explanation:
X = edad de mamá de Marta
15 = 1/3 X
(15)(3) = X
45 = X
(0.25-13) 0.5
PRODUCT
? = Product because idk, common knowledge. I don't know how to explain it , it is just that I KNOW it.
x=2
AB/BD=BC/BE
2/1=x/1
2=1x
sorry cant tell you that