Question
The length of the rectangle is triple its breadth. If
the perimeter of the rectangle is 80 m, then find the area (in m2) of the rectangle.Solution
Let the breadth of the rectangle = x, so the length of the rectangle = 3x Perimeter = 2(l + b) 80 = 2(x + 3x) 40 = 4x x = 10 Breadth = 10 m, Length = 30 m So the area of the rectangle = 10 × 30 = 300 m2
A 240 m long train clears a platform of length 160 m in 16 seconds. The ratio of its speed to that of another train is 5:6. Find the length of the secon...
A train of length 750 meters crosses a pole in 60 seconds. What is the time (in seconds) taken by the train to cross a bridge that is 300 meters long?
Time is taken by two trains running in opposite directions to cross a man standing on the platform in 36 seconds and 21 seconds respectively. It took 27...
A train 420 metre long takes 72 sec to cross a man running at a speed of 4 km/hr in the direction opposite to that of train. What is the speed of the tr...
A train covers a route at its usual speed. If it had gone 20 km/h faster, it would have taken 4 hours less. If it had gone 20 km/h slower, it would have...
Train X, traveling at a speed of 54 km/hr, crosses another train Y, which is moving in the opposite direction at a speed of 90 km/hr, in 't' seconds. If...
A train runs at an average speed of 96 km/hr when not halted. Including stoppages, its average speed drops to 72 km/hr for the same journey. For how man...
- A train crosses a 360-metre-long platform in 24 seconds, and the same train crosses a tunnel 50% longer than the platform in 33 seconds, then find the spee...
Train A takes 90 seconds to cross a telegraph pole by travelling at 18 kmph speed. Train B has its length 60% more than A. It takes 40 seconds to cross ...
A train crosses a pole and a platform of length 420 metres in 10 seconds and 25 seconds, respectively. Find the length of train.
Relevant for Exams:
