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