If `4/5` of a water tank is filled in 1 hour, how much time will be required to fill the rest of it? (a)20 minutes (b) 15 minutes (c)12 minutes (d) 10 minutes

If 3/5 th oif a cistern is filled in 30 minutes, how much more time will be required to fill the rest of it?

If 4/5 of a cistern is filled in 1 minute,how much time will be required to fill the empty cistern?

If 3/ 5^"th" of a cistern is filled in 1 minute, how much more time will be required to fill the of it?

The flowers in a basket double every minute and the basket gets full in one hour.In how much time,the basket was (1)/(32) full? (a) 12 minutes (b) 32 minutes (c) 45 minutes (d) 55 minutes

72hours 6 minutes -:14=?( a) 59 minutes (b) 5 hours 9 minutes (c)6 hours 9 minutes (d) 7 hours 8 minutes

Pipe A can fill an empty cistern in 6.8 hours. Pipe B can fill it up in 10.2 hours. Only Pipe B is turned on for 1.7 hours after which Pipe A is also turned on. How much time will it take in all to fill up the cistern? Options are (a) 5 hours 6 minutes (b) 5 hours 12 minutes (c) 5 hours 5 minute (d) 5 hours 10 minutes.