 
<translate> Bututu uku A, B da C na iya cika tanki daga wofi zuwa cike a cikin minti 30, minti 20 da minti 10 bi da bi. Lokacin da tanki ya zama fanko, duk bututun guda uku suna buɗewa. A, B da C fitar da sinadarai bayani P, Q da R bi da bi. Menene rabo na bayani R a cikin ruwa a cikin tanki bayan minti 3? Zaɓuɓɓuka: (A) 6/18 (B) 6/11 (C) 6/68 (D) 6/19 (E) 6/12 Tsarin hankali: <eng> Three pipes A, B and C can fill a tank from empty to full in 30 minutes, 20 minutes and 10 minutes respectively. When the tank is empty, all the three pipes are opened. A, B and C discharge chemical solutions P, Q and R respectively. What is the proportion of solution R in the liquid in the tank after 3 minutes?
Options:
(A) 6/18
(B) 6/11
(C) 6/68
(D) 6/19
(E) 6/12 Stream of consciousness: 