Question
Ratio of distance covered by boat in upstream to
downstream is 4:3. Time taken in downstream and upstream is 2hr and 4 hr respectively. If speed of boat in still water is 15 km/hr then find speed of stream.Solution
Let distance covered by boat in upstream and downstream be 4x and 3x km respectively. And speed of stream be y km/hr. ATQ, => 4x/(15 – y) = 4 => 4x + 4y = 60 ------ (i) => 3x/(15 + y) = 2 => 3x – 2y = 30 ------ (ii) Solving (i) and (ii), we get => x = 12, y = 3 km/hr Speed of stream = 3km/hr
In ______, the difference between the height of the left sub tree and height of the right tree, for each node, is almost one
In which protocol of email the changes made on one device will not be replicated on other?
When implementing a hash table, which of the following collision resolution techniques is known for its efficiency and is based on creating a linked li...
Running time T(n) where 'n' is the input size of the recursive algorithm given as : T(n) = c + T(n-1), if n > 1 ; T(n) = d if n < 1. The order of the a...
Various IPC mechanisms are:
...Which component is responsible for translating virtual addresses to physical addresses?
The search key used in Index file is also used to physically order the database and search key is the primary key or candidate key of the database. <...
In a typical Ethernet LAN, what type of cable is commonly used for wired connections?
Which boolean function returns true if and only if all input variables are true?
n-ary relationship has how many participating entities?
Relevant for Exams:
