Question
Solution
Let, speed of B be 10v km/h Speed of a is 12v km/h Let the distance be d Time taken to cover the whole distance by A is (d/12v) hours Time taken to cover the whole distance by B is (d/10v) hours Relative speed (10v + 12V) ⇒ 22v km/h When they meet each other together they covered d distance Time taken to meet d/22v hours Then time taken by A to cover the whole journey is (d/22v + P) hours d/22v + p = d/12v ⇒ p = d/12v - d/22v ⇒ p = (d/v)(1/12 - 1/22) ⇒ p = 5/132.(d/v) ⇒ d/v = 132p/5 ----(1) Time taken by B to cover the whole journey is (d/22v + 7 (1/5) ) = (d/22v + 36/5) d/22v + 36/5 = d/10v ⇒ 36/5 = d/10v - d/22v ⇒ 36/5 = (d/v).(1/10 - 1/22) ⇒ 36/5 = (6/110).(d/v) ⇒ d/v = 6 × 22 ----(2) From (1) and (2) get, 132p/5 = 6 × 22 ⇒ p = 5 ∴ The value of p is 5
Who is the author of the novel “I Shall Not Hear the Nightingale”?
At the time of launch of the Smart Cities Mission, how many cities were proposed to be covered under this scheme?
Which antimicrobial enzymes are present in milk?
Which of the following awards is NOT conferred for excellence in dance?
Which of the following is NOT correctly matched according to the plants and the total number of chromosomes they have?
For the year 2024, the President has approved conferment of 132 Padma Awards, how many women are included in the list of 132 Padma Awards?
In which year India won gold in men’s hockey in the Olympic games?
Which of the following is a straight-chain alkyl carboxylic acid with the chemical formula CH₃CH₂CH₂CO₂H?
The point on the supply curve at which a firm earns only normal profit is called the ________.
The Ancient Monuments Preservation Act was enacted in the year ______.
Relevant for Exams:
