Question
A train takes 30 seconds to pass a 500-metre-long bridge
and takes 40 seconds to cross a tunnel that is 50% longer than the bridge. Find the speed of the train in km/h.Solution
ATQ,
Let the length and speed of train be ‘l’ metres and ‘x’ m/s, respectively.
Then, according to question,
(l + 500)/30 = (l + 750)/40
40(l + 500) = 30(l + 750)
40l + 20000 = 30l + 22500
10l = 2500
l = 250 metres
x = (l + 500)/30 = 750/30 = 25 m/s = 25 × (18/5) = 90 km/h
Which of the following are assets of issue department of RBI
171st Aaradhani Music festival was organized in the state of;
Nissan automobile has been embroiled in a legal battle with a state government in India over the issue of incentive to be paid. The state Government is ...
What is a Green Index?
Gupta inscriptions suggest that there were small kingdoms of Nag clans in north India (especially Garhwal), which Gupta king ruled over Nag Chieftains?
Which among the following can also be termed as the National Income of a country?
Which was the 1st capital of the Ahom Empire in the 13th century?
The capital of Madhya Pradesh?
Recently Government of India, World Bank and a state government signed an agreement of $120 million to improve access to water supply. Name the state:
RBI (Transfer of Public Ownership) Act was passed in
Relevant for Exams:
