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Speed of the boat in still water = 56/4 = 14 km/h Let the speed of the stream = x km/h So according to question: 42/(14 – x) + 72/(14 + x) = 8 294 + 21x + 504 –36x = 784 – 4x2 4x2 – 15x + 14 = 0 4x2 – 8x – 7x + 14 = 0 4x(x – 2) – 7(x – 2) = 0 (4x – 7)(x – 2) = 0 x = 2, 7/4 = 2, 1.75 As the speed of the stream is greater than 1.75, the value of x = 2 So the downstream speed and upstream speed of the boat are 16 km/h and 12 km/h respectively. So the desired percentage = (16 – 12)/16 × 100 = 25%
Which of the following is a potential benefit of the Health Facility Registry under the ABDM?
Which of the following Statements is/are True?
I- WHO is an independent agency owned by some of the top pharma companies across the globe.
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Under which of the following theme of the Union Budget the central theme of the passage is derived from?
Which of the following entities is responsible for implementing PMFBY at the state level?
Which entity is primarily responsible for the implementation of the DAY-NRLM scheme?
The Sustainable Development Goals of the United Nations (UN) aims to end poverty by _______________.