Practicing Success
A train passes a telegraph post in 8 seconds and a 264 m long bridge in 20 seconds. What is the length of the train in metres?
|
180 176 164 186 |
176 |
Speed = \(\frac{Distance }{Time }\) Let the length of the train be x Speed = \(\frac{x }{8 }\) ---------1st equation Speed = \(\frac{\text{x + 264} }{20}\) ---------2nd equation From the above equations, it can be deduced that: \(\frac{x }{8 }\) = \(\frac{\text{x + 264} }{20}\) 2.5x = x + 264 1.5x = 264 x = 176 m |