Ricky can go on a motor boat with a speed of 15 km/hour in still water to a certain upstream point and come back to the starting point in a river which flows at a speed of 5km/hour. Find the average speed of motor boat for total journey?
Let, the speed of boat be b km/hour and speed of current be s km/hour Average speed = 2xy/(x+y) (here, x is speed of downstream and y is speed of upstream) = (2 (b+s)(b-s))/((b+s+b-s)) = (b2-s2)/b = (225-25)/15 = `13 1/3` km/hour
Which of the following box is placed third from the top?
Y lives on which floor?
What is the position of one who manufactures Milk with respect to the one who manufactures Bottle?
Which of the following statements is/are true?
Which among the following statements is true?
Who among the following person doesn’t form a group?
Which of the following city G goes?
Find the correct match.
I. DSP-SANJAY
II. SI-ANKIT
III. ASI-TARUN
IV. HC-NAMAN
V. CT- ANKIT
Ishu purchased his bungalow how many years after Deepa?
Who among the following lives on ground floor?
