A tanker departing from Siberian port of Nakhodka is filled at 80 prcent of capacity with heavy Siberian blend of oil, which is oil and sulphur solution with 30 percent sulphur content. 30 percent of the tanker's capacity is off loaded in murmansk to be processed into heating oil for local customers. Then, the tanker proceeds to a North Sea terminal where it is loaded to capacity with Brent blend of oil, in which sulphur is negligible. Aproximately, what percent of the resulting oil solution in the tanker is sulphur?
(A). 15%
(B). 18.75 %
(C). 21%
(D). 24%
(E). 30%
(A). 15%
(B). 18.75 %
(C). 21%
(D). 24%
(E). 30%
) to 
