A tin of oil was 4/5 full. when 6 bottles of oil were taken out and four bottles of oil were poured into it, it was ¾ full. how many bottles of oil can the tin contain?  Choose the correct choice from the following options.
A) 20	B) 10	C) 40	D) 50	E) 20
Suppose x bottles can fill the tin completely   Then 4/5x-3/4x=6-4   X/20=2   X=40   Therefore required no of bottles =40   Answer is 40.
<result>C</result>
A tin of oil was 4/5 full. when 6 bottles of oil were taken out and four bottles of oil were poured into it, it was ¾ full. how many bottles of oil can the tin contain?