Question

The average of the Four numbers is 49 and the first number is one third of the sum of the remaining numbers. what will be the first number?

Answer 1

Answer

Average of 5 no's =49

therefore , sum of 5 no's = 5*49 =245

Average of first and second Number =48 

 therefore , sum of first and second Number = 2*48 =96

Average of 4th and 5th number = 28

 therefore , sum of 4th and 5th Number =2*28 = 56

let the third number =x

   Sum of 5 numbers = 96+x+56

Therefore ,

   96+x+56 =245

 or x+152=245/

or x = 245 -152

or x=93

Hence thirs Number is 93.