tolong bantu caranya:)

awal 50 L
hari 1 => 0.01 m^3 = 1 dm^3 = 10 L
hari 2 => 14L
hari 3 => x
sisa => 13 dm^3 = 13 L

total
50 = 10+14+13+x
50 = 37 + x
x = 13 L (A)