the average of three numbers is 77. the first number is twice the second and second number is twice the third.find the three numbers
Answers
Answered by
1
Let the third number be x.
Therefore the second number will be 3x.
Therefore the first number will be 3x × 2 that is six 6x.
Average =sum of all values ÷number of values
number of values=3 and sum of values is x + 3x+ 6x = 11x.
average = 77
so therefore,
77 = 11x÷3
77×3=11x
231=11x.
231÷11=x=21ans.
so therefore the first number=6x=126
second number =3x=63
third number =x=21
Therefore the second number will be 3x.
Therefore the first number will be 3x × 2 that is six 6x.
Average =sum of all values ÷number of values
number of values=3 and sum of values is x + 3x+ 6x = 11x.
average = 77
so therefore,
77 = 11x÷3
77×3=11x
231=11x.
231÷11=x=21ans.
so therefore the first number=6x=126
second number =3x=63
third number =x=21
Similar questions