Question
Time is taken by two trains running in opposite
directions to cross a man standing on the platform in 27 seconds and 17 seconds respectively. It took 21 seconds for the trains to cross each other. What is the ratio of their speeds?Solution
Let the speed one train be x m/s and the speed of the second train be y m/s. Length of the first train = Speed × Time = 27x Length of second train = Speed × Time = 17y So, {(27x + 17y)/(x+y)} = 21 ⇒  27x + 17y = 21x + 21y ⇒ 6x = 4y Therefore, x:y = 2:3
Which monsoon is responsible for rainfall in tamil nadu
Cannibalism in poultry is often due to the deficiency of which nutrient?
In order to make PACS self-reliant in tune with 'Atmanirbhar Bharat Abhiyaan', the Government of India (GoI) has, on 29th June 2022 approved the Central...
Which pigment is responsible for the red color of ripe tomatoes?
A non-heritable, environmental phenotype that is analogous to a genotype-determined phenotype in another person is termed as……………
...Flavor of lemon grass is due to
Which of the following is not a component of seed vigor?
Which rock is classified as a foliated metamorphic rock?
The availability of plant nutrients are more at a pH range of 6-7 except
Which one of the following element responsible for pollen development?
Relevant for Exams:
