Question
A and B are travelling towards each other with a speed
of 30 km/hr and 40 km/hr. If they started at same time and A covered 20 km less distance than B before meeting him, then find the distance between them before starting.Solution
Since, the time taken by A and B is same, therefore the ratio of the distance covered by them will be equal to the ratio of their speeds. Therefore, ratio of the distance covered by A and B = 30:40 = 3:4 Let the distance covered by A and B be 3x km and 4x km According to the question, 4x – 3x = 20 Or, x = 20 Therefore, distance between them before starting = 3x + 4x = 7x = 140 km
Weight of a body on the surface of the earth is W₁. The weight of the same body is W2, at a height of 500 metres above the surface, and W3 at a depth ...
Which of the following pairs is not correctly matched in respect of Manipur?
What is the minimum age for employment of children in a factory under the Factories Act 1948?
Which one of the following is the first book in which the transactions of a business unit are recorded ?
Who has topped the category of large states in the recently released India Justice Report 2022?
How is self-generated goodwill amortized in accounting?
Who is the author of Vikramakacharita?
Which of the following statements is/are correct about Open Market Operations?
I. It refers to the mechanism through whic...
Who can raise complaints with the Insurance Ombudsman?
The ratio of length to breadth of a rectangle is 7:5. If the sum of the length and breadth of the rectangle is 48 cm, then find the area (cm2...
Relevant for Exams:
