Question
A boat, whose speed in still water is 25% more than the
speed of the current, covers 810 km downstream in _____ hours. The speed of the boat in still water is ______ km. The values given in which of the following options will fill the blanks in the same order in which is it given to make the statement true: I. 10, 45 II. 15, 30 III. 12, 35.7Solution
Let, the speed of the current be x km/hr Therefore, speed of the boat in still water = 1.25x km/hr Downstream speed of the boat = x + 1.25x = 2.25x km/hr For I: 2.25x = 810/10 => 2.25x = 81 => x = 36 Therefore, speed of boat in still water = 1.25x = 45 km/hr Therefore, I is True. For II: 2.25x = 810/15 => 2.25x = 54 => x = 24 Therefore, speed of boat in still water = 1.25x = 30 km/hr Therefore, II is true. For III: 2.25x = 810/12 => 2.25x = 67.5 => x = 30 Therefore, speed of the boat in still water = 1.25x = 37.5 km/hr Therefore, III is false.
State true or false
A ping of death attack involves sending a malformed packet to a targeted machine, resulting in deleterious behavior such ...
In pandas, what does df.groupby('A').agg({'B': 'sum', 'C': 'mean'}) return?
Which of these is a distributional representation for words?
Which is best fit for blank space 16?
What is the primary purpose of the fork() system call in Unix-based operating systems?
The ability of the device to give identical output when repeat measurement are made with the same input is defined as________
Which of the following statements best describes a mesh topology in network design?
In a nodal analysis a circuit with 10 nodes will have _______ unknown voltage and _______equation.Â
Which of these is an application of AI in healthcare?
Which of the following conditions is not one of the four necessary conditions for a deadlock to occur?
Relevant for Exams:
