Question

Devaughn is 8 years older than Sydney. The sum of their ages is 64. What is Sydney's age?

Answer 1

Let’s take Sydney age as x
And Devaughn age as 8+x
Equation will be
8+x+x=64
8+2x=64
2x=64-8
2x=56
x=28
Therefore Sydney is 28years old

Answer 2

Sydney's age is 28

Explanation:

Let Devaughn be D

And Sydney be S

D=S+8..... equation 1

D+S=64...... equation 2

Substitute equation 1 to equation 2

S+8+S=64

2S+8=64

2S=64-8

2S=56

S=56/2

S=28

Hope it helps

Good luck