Answer:
Taylor is 15 years old.
Spencer is 3 years old.
Step-by-step explanation:
Let Taylor's age be x
Let Spencer age be y
x = 5y ......…...........(1)
x + y = 18...................(2)
Make y the subject of the formula in equation (1)
y = x/5
Substitute x/5 for y in equation 2
x + y = 18...................(2)
[tex]x+\frac{x}{5} =18\\\frac{6x}{5} = 18\\Cross multiply .\\6x = 90\\Divide both sides of the equation by 6\\x = 15\\Substitute 15 for x in equation 1\\[/tex][tex]x = 5y (1)\\15 = 5y\\Divide both sides of the equation by 5\\y = 3[/tex]
