Question
Train A takes 45 minutes more than train B to travel a
distance of 450 km. Due to engine trouble speed of train B falls by a quarter, so it takes 30 minutes more than Train A to complete the same journey. What is the speed of Train A (in km/hr)?Solution
let the speed of train A is x and speed of train B is 4y 450/x - 450/4y = 45 minutes(3/4) hour ------(1) 450/3y - 450x = 30 minutes (1/2) hour ------(2) on solving example (1) and (2) we get y = 30 and x = 100 km/hr Sped of A = 100 km/hr
Which of the following countries is not one of the top 5 Gold Producing Countries?
The Reserve Bank of India has recently introduced ₹50 denomination banknotes in the Mahatma Gandhi Series with a motif of ______ on the reverse.
To which Gharana does the Indian classical vocalist Pandit Jasraj belong?
Which of the following is an example of Rabi crop?
In which of the following states is the Singrauli Coal Mine situated?
Which one of the following is not among the four pilots who have been trained to become astronauts for the ISRO's Gaganyaan mission to space planned for...
Which constitutional amendment, known as 'mini constitution', gave effect to the recommendations of the Swaran Singh Committee?
Which is an initiative of the Ministry of Education to provide psychosocial support to students for their Mental Health and Well-being?
New Year is observed in different regions with different names as given below:
1. Navreh      a. Malayali New year
2. Ugadi �...
 Which among the following Indian Olympians is associated with wrestling sport?
