emma773944
contestada

the sum of three numbers is 110. the second number is twice the first. The third number is equal to three times the first minus the one half the first

Respuesta :

musiclover10045

Let the first number = X

The second number is twice the first, so is 2X

The third number would be 3X-0.5x = 2.5X

Now you have X + 2X + 2.5X = 110

Simplify:

5.5X = 110

Divide both sides by 5.5:

X = 110 / 5.5

X = 20

The first number is 20.

The second number is 2x = 2*20 = 40.

The third number = 2.5x = 2.5*20 = 50.

Otras preguntas