Answer:
B) 25
Step-by-step explanation:
0.10x + 0.20y = 0.18(x+y)
Here, y=100
Put the value of y in the given equation,
0.10x + 0.20*(100) = 0.18(x+100)
0.10x + 20 = 0.18x + 18
Subtract 0.18x and 20 on both sides,
0.10x - 0.18x = 18 - 20
-0.08x = -2
Divide by -0.08,
x = 25 millilitres
