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?

Question

Let ___ = _____________
Let ___=______________

Answer 1

Let Jack's age = x
Therefore, Malonie's age = x + 4

The sum of their ages is 28, so we can write the equation:
x + (x + 4) = 28