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Volume of the tank = πr²h = (22/7) × 7² × 12 = (22/7) × 49 × 12 = 1848 m³. Half of the volume = 1848 / 2 = 924 m³. Convert to liters: 924 × 1,000 = 9,24,000 liters. Time to empty = Volume / Rate = 9,24,000 / 25 = 36,960 minutes. Convert to hours: 36,960 / 60 = 616 hours. Correct answer: a) 616 hours.
The current age ratio of Rahul to Sakshi is 3:2. Additionally, the ratio of Rahul’s age five years ago to Sakshi’s age ten ye...
The heights (in cm) of 9 basketball players in a tournament are as follows: 178, 182, 175, 180, 184, 179, 177, 181, 183
Find the median height of...
Present ages of ‘A’, ‘B’ and ‘C’ are in the ratio 10:12:15, respectively. If present average age of ‘A’ and ‘C’ is 50 years, then fi...
In a family of four, the average age of Anu, Ben, Carla, and Dan is 28 years. The ratio of Carla's to Eva's present ages is 5:6, and Ben's age is 20% le...
The ratio of the present ages of P and Q is 6:5 respectively. If the age of P 12 years hence from now will be 125% more than the age of Q 4 years ago fr...
The average age of a group of 20 persons is found to be 27 years. Later it is found that age of two of the persons is calculated as 25 and 30 instead of...
‘A’ is 8 years younger than ‘B’ and 7 years elder than ‘C’. If the present age of ‘B’ and ‘D’ is 20 years and 15 years, respectively...
6 years ago, the ratio of the ages of A and B was 2:3 and after 5 years it will become 5:7. Find their present ages.
The age of 'P' five years from now will be the same as the age of 'Q' four years ago. Six years ago, the sum of the ages of 'P' and 'Q' was 27 years. Ad...
The current average age of four colleagues - Priya, Qasim, Ron, and Sam - is 30 years. The ratio of the present ages of Sam and Tina is 3:4, respectivel...
