If the sum of their ages is 140, and Asaf is 50 years old, Alexander is 140-50 = <<140-50=90>>90 years old.
The age difference between Asaf and Alexander's age is 90-50 = <<90-50=40>>40
Since the age difference between Asaf and Alexander's age is half the total number of pencils Asaf has, Asaf has 2*40 = <<2*40=80>>80 pencils.
If Alexander has 60 more pencils than Asaf, Alexander has 80+60= <<60+80=140>>140 pencils.
Together, they have 140 + 80 = <<140+80=220>>220 pencils
#### 220