Question

There are three numbers. The first number is twice the second number. The third number is twice the first number. The sum of the three numbers is 126. You may find it helpful to use this diagram that was used by a student to solve this problem.

Answer 1

x=18

Explanation:

let the no.2 be=x

so,the no.1 becomes=2x

and no.3 i=2(2x)=4x

According to the statement:

x+2x+4x=126

7x=126

x=126/7

x=18