Question
A boat covers a distance of 45 km in still water in 2.5
hours. The ratio of its speed while traveling upstream to its speed while traveling downstream is 4:5. What is the speed of the stream?Solution
Speed of the boat in still water = 45 ÷ 2.5 = 18 km/hLet the speed of the stream = 'x' km/hUpstream speed of the boat = (18 - x) km/hDownstream speed of the boat = (18 + x) km/hAccording to the question,(18 - x):(18 + x) = 4:5Or 90 - 5x = 72 + 4xOr, 18 = 9xSo, x = (18/9) = 2
Low-level languages are primarily used to write programs that interact directly with _______________. Â
When an MS Excel file is created it has by default ____ sheets.
Microprocessors was used in which type of Generation ?
Which of the following is a permanent memory?
Which of these is a command in Data Control Language (DCL)? Â
Rita Mukherjee has recently died. She was related to which field?
According to the Knight Frank report Prime Global Cities Index Q1 2023,which city has gained the 6th spot among 46 cities globally in terms of annual pr...
A group of 8 bits is known as:
The operation of a digital computer is based on which principle?
In India, _____ state became the first to offer free e-mail address in Hindi to its residents.Â
Relevant for Exams:
