If a tap could fill entire tank in 18 hrs due to leakage, then in how much time
tank can be emptied by leakage if tap can fill entire tank in 15 hrs without leakage  Choose one.
A) 12hrs	B) 24hrs	C) 36hrs	D) 48hrs	E) 90hrs
time take to fill[withleakage] =18hrs so workdone in 1hr=1/18   time tkae to fill[without leakage]=15hrs so workdone in 1hr=1/15   if u subtract both u'll get time taken by leakage to empty...   1/18-1/15=1/90 so 90hrs   ANSW90hrsR:90hrs
<result>E</result>
If a tap could fill entire tank in 18 hrs due to leakage, then in how much time
tank can be emptied by leakage if tap can fill entire tank in 15 hrs without leakage