THE GATEBOOK

Normalization Lectures

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? (A) 5/11 (B) 6/11 (C) 7/11 (D) 8/11