Question
Speed of a boat in still water is 6 times more than the
speed of stream. If boat covers 144 km in downstream in 9 hours, then find the time taken by the boat to cover 120 km in upstream.Solution
Let the speed of stream be ‘x’ km/hr. So, speed of boat in still water = 7 × x = 7x km/hr Downstream speed of boat = 7x + x = 8x km/hr According to question; 8x = 144/9 = 16 Or, x = 2 Upstream speed of the boat = 7x – x = 6x = 6 × 2 = 12 km/hr Required time taken = 120/12 = 10 hours
A MODEM is required for accessing internet through cable. What does the term MODEM mean?
The programs which are as permanent as hardware and stored in ROM is known as
Network access or interface layer in TCP/IP Protocol Architecture Model combines ...................... of the OSI reference model.
Which among the following device is used to display visual output to the user?
Which of the following extension is not audio extension ?
Word processing, spreadsheet, and photo-editing are examples of
What is the function of the 'ALU' in a computer's CPU?
Which of the following technologies were used by third-generation computers?
Movement of an icon on your desktop is called
Press………to move the insertion point to the Address box, or to highlight the URL in the Address box.
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