Jed is 10 years older than Matt. In 10 years, Jed will be 25 years old. What is the sum of their present ages?
Jed is 25 - 10 = <<25-10=15>>15 years old now.
So, Matt is 15 - 10 = <<15-10=5>>5 years old now.
Thus, the sum of their present ages is 15 + 5 = <<15+5=20>>20.
#### 20