Question
Train 'A' and Train 'B' pass each other in 10 seconds
when moving in opposite directions. If Train 'A' takes 12.5 seconds to pass a pole, and the speeds of Train 'A' and Train 'B' are 12 m/s and 13 m/s, respectively, find the length of Train 'B'.Solution
Length of train 'A' = 12 X 12.5 = 150 metres Let the length of train 'B' be 'x' metres. So, 150 + x = 10 X (12 + 13) Or, 150 + x = 250 Or, x = 100 So, length of train 'B' = 100 metres
Twenty five liters of 60% concentration of acid solution is added to 35 liters of 80% concentration of acid solution. What is the concentration of acid ...
A circular park is having the circumference of 110m. A uniform path of width 3.5m has been made around the park. Find the area of this path?
In an exam of 100 marks, the average marks of a class of 38 students are 72. If the top 3 scorers of the class leave, the average score falls “dow...
The measure of an angle is one-third of its supplementary angle. Find its measure.
- The area of the base of a rectangular reservoir is 960 m² and the volume of water contained in it is 38400 m³. Find the depth of the water in the reservo...
There is a rectangular paper, whose length and breadth are in the ratio 7:8, respectively and it has a perimeter of 60 metres. If a triangular piece wit...
The volume and height of a cylinder are 2662 cm3 and 7 cm. Find the radius of the cylinder.
Find the length of a wire radius 0.40 cm which can completely cover the surface of a cylinder whose height is 1.6m and base radius 21 cm?
The radius of a right circular cylinder is 3 times its height. If the height of the cylinder is 3.5 cm, then what is the volume of the cylinder. (in cub...
A cuboidal room has a length of 28 metres and a width of 16 metres. The volume of air in the room is 2240 cubic metres. What will be the cost of paintin...
Relevant for Exams:
