Question
A 420 m long train crosses a platform twice its length
in 3 min. Find the speed of the train. Section 1Solution
Speed of train = (Length of train + Length of Platform)/Required time Length of train = 420 m Crossing time of platform = 3 × 60 = 180 sec Length of platform = 420 × 2 = 840 m Let the speed of train be x. Speed of train = (420 + 840)/180 ⇒  x = 7 m/s
What is the speed of the stream?
I. The boat covers a distance of 54 km in 3 hours while running downstream.
II. The boat covers the same ...
What is the smallest number of the six numbers? Â
I.The average of six consecutive odd numbers is 8. Â
II. The sum of six consecutive od...
What is the yearly salary of Mr. Rohan?
Statement I: Sohan earns Rs. 44000 more than Mohan in a year who earns Rs. 16000 more than Rohan per ann...
The difference between the two digits of a two – digit number is 6. What is the number?
I. The digit at unit place is bigger than the ten&r...
What is the distance between two points A and B (in km)? Which of the following statement (s) is sufficient to give the answer:
I. Travelling at ...
What was the profit earned by selling Shoes?
Statement I : The article was sold for Rs 2700 after getting a discount of 10% on the labelled pric...
If 5p + 2q = 23, then determine the value of ‘p’
Statement I: 35p + 14q = 161
Statement II: 20p + 8q = 92
What is the ratio of IT employees to HR employees in A?
Statement I: The ratio of IT to Sales employees in A is 4:5, and the ratio of Finance to ...
What is the age of a class teacher?
I. There are 13 students in the class.
II. The average age of students and the teacher is 16 years.
Each question below is followed by two statements I and II. You have to decide whether the data given in the statements are sufficient to answer the que...
