Question

average of three number is 77 the first number is twice of the second one and second number is twice the third number and the three numbers

Answer 1

Let, three numbers=x, y, z

Given,

y=2x

z=2y

So,

y=2x

z=4x

Therfore,

x+2x+4x/3 =77

7x=231

x=33

So, y=66

z=132

Answer 2

Answer:

Let d 3rd no. be x

=>2nd no. =2x

=>1st no. =2(2x) =4x

Average=77=(x+2x+4x)/3

=>7x/3=77

=>x/3=11

=>x=33

Therefore,

3rd no. =33

2nd no. =66

1st no. =132