The combined speeds of boats 'P' and 'Q' in still water amount to 52 km/hr. The current's speed affecting boat 'P' is 25% greater than that affecting boat 'Q'. Boat 'Q' can cover 1927 km downstream in 41 hours, while boat 'P' takes 47 hours to cover the same distance downstream. Determine the upstream speed of boat 'P'.
ATQ, Speed of boat ‘P in still water be ‘p’ km/hr Therefore, speed of boat ‘Q’ in still water = (52 – p) km/hr Let the speed of the current for boat ‘Q’ be q km/hr Therefore, speed of current for boat ‘P’ = 1.25q km/hr According to the question, (p + 1.25q) = 1927/47 = 41 ….. (1) Also, (52 – p + q) = 1927/41 = 47 …. (2) On solving equation (1) and (2), we get Speed of boat ‘P’ in still water = p = 21 km/hr Speed of the current for boat ‘Q’ = q = 16 km/hr Therefore, speed of the current for boat ‘P’ = 1.25q = 20 km/hr Therefore upstream speed of boat ‘P’ = p – 1.25q = 21 – 20 = 1 km/hr
Which of the following is incorrect regarding EPFO?
ISRO's PSLV-C55 rocket launched satellites TelEOS-2 and Lumelite-4. Which country do these satellites belong to?
An example of intangible asset is:
Personal accounts are related to:
The critical perspective assumes that:
A firm has assets of 1,00,000 and the external liabilities of 60,000. Its capital would be
Vasco da Gama discovered the new and all-sea route from Europe to India and landed on 17th May 1498 at:
Which of the following act/s is/are provided a “Grievance Handling Mechanism”?
I. Factories act 1948
...
Who is the chief economist of the IMF?
Which of the following measures of dispersion is based on the variance of a dataset?
