Question

I just need help with this one problem

Answer 1

Nicole is 36 years old

Answer 2

Answer:

Age of Nicole x= 24 years

Age of Donald = y = 48 years

Step-by-step explanation:

Suppose x represents Age of Nicole in years and y represents age of Donald in years

Sum of their ages is 72, therefore

$x+y=72$ -------------- (1)

Nicole is half as old as Donald

$x= \frac{y}{2}$   ------------------ (2)

Substitute x=y/2 in equation (1)

$\frac{y}{2} +y = 72 \\3y = 2(72) \\y = \frac{144}{3} \\y= 48 \ years$

Now put y=48 in equation (2)

$x =\frac{48}{2} \\x=24$