Let tank capacity is = 100 ltr LCM of 20 and 25 So tap A can fill it in 20 hours ∴ Tap A can fill per hours = 100/20 = 5 ltr Tap B can emptied it in 25 hours ∴ Tap B can empty per hours = 100/25 = 4 ltr Tank filled after 2 hour = 5 - 4 = 1 ltr (If taps open alternatively) In last hour tap A fill tank 5 ltr So rest part of tank need to be filled is = 100 - 5 = 95 ltr In 2 hours tank filled = 1 ltr So 95 ltr to be filled in = 95 × 2 = 190 ∴ So total time = 190 + 1 = 191 hours
Which hill station is often called the "Mini Switzerland of India"?
Browning disease occurs due to deficiency of Boron in which of the following vegetable?
In which Indian state is the world's first 'Black Tiger Safari' set to be established?
On which of the following state, Singur Dam is located?
The motto "liberty, equality, fraternity" originated from which revolution?
Switzerland Tourism has roped which of the Indian athletes as its Friendship Ambassador recently?
Which of the following is NOT covered under the right to freedom according to the Indian Constitution?
Who is the author of the book ‘The Blue Book’?
The 'Nutri Garden Project' that gained recognition and was appreciated by Prime Minister Narendra Modi is implemented in which Indian territory?
Which Gharana is famous for Sitar players?