There was one girl named Tina and one boy named Anil. The ratio of ages of Tina and Anil 5 years from now will be 5:6 and the age of Anil 2 years before Tina was born was 3 years. The Age of Tina after as many years as Anil was old when Tina was 2 years old is (C) years. Both Anil and Tina left the picnic and decided to go Rafting downstream when the speed of the stream was (D) km/hr. The still water speeds of Anil's and Tina's boat was 20 km/hr and 15 km/hr respectively. To cover a distance of 20 km, Anil travelled at 25% more speed in still water than normal for (3/5) of the distance and for the remaining distance he travelled at 25% less than normal still water speed. It took him 48 minutes to cover the distance. Tina on the other hand, covers the same distance but with 33.33% more than normal speed in still water for half the distance and 66.66% more than normal speed in still water for remaining journey. It took her (E) minutes to cover the distance. On the next day Anil and Tina started working on a task. Anil's efficiency is 20% more than that of Tina. Together they completed the task in 5 hours. If Tina had worked alone at 80% of her efficiency she would have completed the task in (F) minutes.
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Andaman Nicobar
The Andaman and Nicobar Islands, one of the seven union territories of India comprising 572 islands of which 37 are inhabited, are a group of islands at the juncture of the Bay of Bengal and Andaman Sea.
The territory is about 150 km (93 mi) north of Aceh in Indonesia and separated from Thailand and Myanmar by the Andaman Sea. It comprises two island groups, the Andaman Islands (partly) and the Nicobar Islands, separated by the 150 km wide Ten Degree Channel (on the 10°N parallel), with the Andamans to the north of this latitude, and the Nicobars to the south (or by 179 km). The Andaman Sea lies to the east and the Bay of Bengal to the west.
The territory's capital is the city of Port Blair. The total land area of these islands is approximately 8,249 km2 (3,185 sq mi). The islands host the Andaman and Nicobar Command, the only tri-service geographical command of the Indian Armed Forces. The territory is dived into three districts: Nicobar District with Car Nicobar as capital, South Andaman district with Port Blair as capital and North and Middle Andaman district with Mayabunder as capital.
The Andaman Islands are home to the Sentinelese people, an uncontacted people. The Sentinelese are the only people currently known to not have reached further than a Paleolithic level of technology.
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