A train can pass a pole in 15 seconds and a 100-meter platform in 25 seconds. It has the following length:
A. 50 m
B. 150 m
C. 200 m
D. Data inadequate
Answer:B
A train can pass a pole in 15 seconds and a 100-meter platform in 25 seconds. It has the following length:
A. 50 m B. 150 m C. 200 m D. Data inadequate
Explanation: Assume the train is x metres long and travels at y metres per second.Consequently, x/y = 15 => y = x/15. x + 100/25 Equals x/15 as a result.=> 25x = 15(x + 100).=> 15 times + 1500 times = 25 times=> 1500 multiplied by ten is equal to a tenfold increase.=> 150 m is the value of x.