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Let the speed of the stream be 'x' km/h. Original time taken to cover the journey = (630/60) = 10.5 hours So, time taken to cover the first half of the journey = 10.5 ÷ 2 = 5.25 hours Time taken to cover the second half of the journey = 5.25 hours - 15 minutes = 5 hours So, speed of the boat in second half of the journey = (315/5) = 63 km/h So, net change in speed = 63 - 60 = 3 km/h So, 1.25x - x = 3 Or, 0.25x = 3 So, 'x' = 12 Therefore, speed of the steam = 12 km/h
Which of the following statements about antibodies is correct?
A multi-branched polysaccharide of glucose that serves as a form of energy storage in animals and fungi is:
How many transmembrane alpha-helices are present in the G-protein coupled receptors?
Which of the following is a plant-based source of protein?
Which of the statements given below are correct?
1. A person having blood group 'A' can donate blood to persons having blood group 'A' and bloo...
Which of the following is NOT a symptom of Amoebiasis?
Why do starts twinkle in the sky?
Given below is the DNA coding sequence. Its complementary strand would readas :
5' – GTATTACG – 3'
Identify the correctly matched pair: