Original-drank+added=result
orignail=stwabery+mango+watermelon
original=0.85+0.50+0.15=1.5liter
drank=0.3
orignail-drank=result
1.5-0.3=drank=1.2liter
A. see above
B. addition and subtraction facts
Answer:

Step-by-step explanation:
(This exercise has been presented in Spanish and for that reason explanation will be held in Spanish)
La cantidad de botellas de 0,25 litros que se llenan con 49 litros de yogurt es:


La cantidad remanente de yogurt es:


Ahora, la cantidad de botellas de 0,5 litros que se llenan con el volumen remanente es:


Finalmente, el total de botellas a llenar es:


Given that the 35% of area has been developed, the percentage of land that has not been developed is:
100-35
=65%
hence the acres of land that are to be developed will be:
35/65*500
=269.23 acres
the answer is 269.23
24/7 .........................................................................................