Jed is 10 years older than Matt. In 10 years, Jed will be 25 years old. What is the sum of their present ages?
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