Question

Tap a takes 6hrs to fill a water tank,and tap b takes 3 hrs to fill tge same tank.if both taps arr simultaneously opened,time taken to fill the tank

Answer 1

for tab A 6 hours equal to 1/6hr
for tap b 3hr equal to 1/3hr
for both add 1/3 +1/6 = 2+1/6 =3/6 = 2hour answer

Answer 2

the both tap took to fill 6+3 =9hrs