Answered

If 120 is added to one third of a number,the result is double of a number.what is the number?

Sagot :

Let number be n
n/3 + 120 = 2n
n + 120 (3) = (3) (2n)
n + 360 = 6n
6n - n = 360
5n/5 = 360/5
n = 72
The number is 72.

To check:
72/3 + 120 = 2 (72)
24 + 120 = 144
144 = 144