Question
A man can go on a motorboat with a speed of 12 km/hour
in still water to a certain upstream point and return to the starting point in a river that flows at a speed of 8km/hour. Find the average speed of the motorboat for the total journey. Type-sscSolution
Let the speed of the boat be b km/hour and the speed of the current be s km/hour. Average speed = 2xy/ (x+ y) (here, x is the speed of downstream and y is the speed of upstream) = (2 (b +s) (b-s))/ ((b+ s +b -s)) = (b2 - s2)/b = (144 - 64)/12 = 80/12 = 20/3 Km/h
The Supreme Court granted four weeks to the Centre and the West Bengal government to file their response on a plea ___________ a court-monitored...
Select the most appropriate option to fill in blank No.4.
Choose the appropriate word to fill the blank.
Choose the most appropriate option for blank no. 1
Fill in the blank with the appropriate word.
Find the appropriate word.
Select the most appropriate option to fill in blank.
Find the appropriate word.
Choose an appropriate word that fits the blank 199.
Find the appropriate word.
Relevant for Exams:
