Let the length of train ‘A’ be ‘x’ meters. Therefore, the length of the goods train = ‘4x’ meters Speed of train ‘A’ = 54 × (5/18) = 15 m/s According to the question, 4x + x = 15 × 20 => 5x = 300 => x = 60 Therefore, the time is taken by train ‘B’ to cross train ‘A’ = {(60 + 240)/ (15 + 9)} = 300/24=50/4=12.5second
A rectangle has a length that is 4 cm more than its width. If the perimeter of the rectangle is 32 cm, find the dimensions of the rectangle.
A jar initially contains 100 liters of alcohol. First, 25 liters of alcohol are stolen and replaced with water. Then, a second person takes 10 liters of...
A shopkeeper mixes two types of rice, costing $30 per kg and $50 per kg, in the ratio 3:2. He sells the mixture at $45 per kg. What is his percentage pr...
What is the total number of work hours reported by employees in the Sales department?
The average score of 24 students in a class is 78. If the top 4 scores are removed, the new average score of the remaining students drops by 2 points, w...
The value of 0∫π cos3x dx is –
Two pipes A and B can fill a tank in 15 hours and 20 hours, respectively. Another pipe C can empty the tank in 30 hours. If all three pipes are opened t...
Find the area of a figure consisting of a rectangle with length 8 cm and width 5 cm, and a semicircle with a diameter equal to the width of the rectangl...
6, 41, 208, 1045, 5232, ?.