Start learning 50% faster. Sign in now
Let the speed of boat in still water be x km/hr and the distance be y km. Rate downstream = (x + 3) km/hr Rate upstream = (x – 3) km/hr According to the question, y/(x + 3) = 7/2 --- (i) y/(x – 3) = 4 --- (ii) On dividing equation (i) by (ii), (x – 3)/(x + 3) = (7/2)/4 = 7/8 8x – 24 = 7x + 21 x = 21 + 24 = 45 kmph
‘/a’ is used for what in C++
Which consensus mechanism is used by Bitcoin, the first blockchain-based cryptocurrency?
In which network topology does each node have a direct connection to every other node?
If we want to represent the graph as an______ , then it can be implemented as_______.
Which operator is used to allocate dynamic memory in C++?
The time required to delete a node x from a doubly linked list having n nodes is
What is the purpose of a "private blockchain"?
XML is designed to ____ and ____ data)
In RDBMS, what is the purpose of the Data Dictionary?
What does the term "atomicity" mean in the context of transactions?