Question

( p^{prime}-1 ) qur
( Q=6 mathrm{m} )
( R=x ln r )
( =2 h r, 4 ) omen

# The pipes P and Q take 4 hrs and 6 hrs to fill -a tank respectively. When waste pipe R is opened with P and O the aty tank is filled in 24 hrs. In what time does waste pipe R empty a full tank of water? b) 2hrs. 30 mm. c) 2 hrs. 40 mm d4hrs. a) 2 hrs

Solution