Question - 7
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 solution P,Q and R respectively. What is the proportion of solution R in the liquid in the tank after 3 minutes ?
- A \(\frac { 5 }{ 11 } \)
- B \(\frac { 6 }{ 11 } \)
- C \(\frac { 7 }{ 11 } \)
- D \(\frac { 8 }{ 11 } \)