Question
A boat can row to a place of 60km away and come back
in hours. The time to row 12 km with the stream is same as the time to row 8km against the stream. Find the speed of the current?Solution
Speed downstream = 12/x km/hr Speed upstream = 8/x km/hr According to the question, 60/(12/x) + 60/(8/x) = 25/2 60 (x/12+x/8) = 25/2 15 (x/3+x/2) = 25/2 x = 1 So, speed downstream = 12 km/hr Speed upstream = 8 km/hr Speed of current = 1/2 (12 – 8) = 2km/hrÂ
The overall design, construction, organization and interconnecting of the various components of a computer system is referred as.
Press ___ to start presentation from the beginning
How can you apply a pre-designed set of formatting options to a Word document?
What is the shortcut key for Spell check in document.
The default file extension of MS-Excel is
Which of the following options allows you to choose whether to keep or discard the formatting of pasted text in MS Word 365?
How can you view two different pages in the same document simultaneously in Microsoft Word?
Which of the following formulas correctly calculates the sum of values in cells A1 to A5 in Excel?
Microsoft Office Word creates a ____ for you when you press ENTER or the SPACEBAR after you type the address of an existing Web page.
The document can be zoom maximum upto