Respuesta :
Answer:
80 liters
Step-by-step explanation:
Let the amount of 60% solution be S60
Let the amount of 30% solution be
S30=40 litres
Let the amount of 50% solution be
S50=40+S60 litres
So for this to balance we have:
60 100
S60
+
(
30
100
×
S
30
)
=
50
100
d
S
50
60
100
S
60
+
(
30
100
×
40
)
=
50
100
(
S
60
+
40
)
3
5
S
60
+
12
=
1
2
S
60
+
20
3
5
S
60
−
1
2
S
60
=
20
−
12
1
10
S
60
=
8
S
60
=
80
litres
