In a test match, average of run scored by 5 players is 73. If run score by four players
Are 125, 80, 52, and 20, respectively, how many run did the 5th player score ?

Explanation: Here, initial average = 7
As we know that if all the number is multiplied by a certain number, then their average must be a multiple of that number.
New average = 7 x 12 = 84

Explanation:We know that if all the given number are multiplied by a particular number,
Than their average is also multiplied by the same number.
Hence, the new average = 50 x 2 = 100.