contestada

Jack is 4 times as old as Lacy. 9 years from now the sum of their ages will be 63. How old are they now?
Jack is
years old while Lacy is
years old.

Respuesta :

williamm3246

Answer:

jack is 54 and lacey is 13.5. I think

Step-by-step explanation:

Let Jack be J and Lacy be L.

First equation:   J=4L

Second equation:    (J+9)+(L+9)=63

Solving using substitution:

4L+9+L+9=63

5L+18=63

5L= 45

L = 9

L=9 and J=4L  = 4*9 = 36

 

So Jack is 36 years old and Lacy is 9 years old.