Question

7) Joey is four years older than Billy. The sum of

their ages is 24.
a) Write a system of equations to represent
this situation. Let j=Joey's age and
b=Billy's age.
b) Solve to determine the age of both Billy and
Joey

Answer 1

Answer: j+b=24

J=b+4

Step-by-step explanation: (b+4) + b=24

You’re going to substitue J=b+4 into j+b=24

you’re going to get joeys age 14, Billy’s age 10

Answer 2

Joey is 14, Billy is 10.

Explanation:

The system of equations you can use is:

j=b+4

j+b=24

(b+4)+b=24

2b+4=24

2b=20

b=10

j=10+4

j=14