Question
Quantity I : The rate at which the train must run to
reduce the time to 30 minutes. A train takes 40 minutes for a journey if it runs at 72 km/hr. Quantity II : The speed of the train, Shailendra travelled 400 km by train and 300 km by taxi. It took him 4 hrs and 10 min. However, if he travels 360 km by train and 540 km by taxi, he takes 56 minutes more.Solution
Quantity I: Distance = 72 × 40/60 = 48 km Speed = 48/(30/60) = 96 km/hr Quantity II: Let the speed of train is x km/hr and speed of taxi is y km/hr 400/x + 300/y = 25/6 4/x + 3/y = 1/24 ……….. (1) 360/x + 540/y = 51/10 120/x + 180/y = 17/10 …………. (2) By solving 1 and 2, We get x = 150 km/hr and y = 200 km/hr so Quantity II = 150 km/hr Hence, Quantity I < Quantity II
What is the primary purpose of the 'Motherboard'?
Which of the following allows user authentication through fake identity?
One byte represents:
The DBMS acts as an interface between what two components of an enterprise-class database system?
Which among the following can be called an electronic check ?Â
The input, output, and storage devices are known as
The transformation of raw data into meaningful information in a computer is termed as-
Which of the following is not an application layer service?
Which of the following is the primary function of a "VPN" in a computer network?
What is the name of the batch file that is automatically run when MS-DOS is booted?
Relevant for Exams:
