3. Write the equations: Jack and his sister Malonie are 4 years apart in age. The sum of their ages is 28. What are their ages?

Let ___ = _____________
Let ___=______________

1 answer

Let x = Jack's age
Let y = Malonie's age

Based on the given information, we can set up the following equations:

1) x - y = 4 (Jack is 4 years older than Malonie)
2) x + y = 28 (The sum of their ages is 28)

Solving this system of equations will give us the values of x and y, which represent Jack's and Malonie's ages.