john counts backward from 140by twenties and lee counts backward from 120 by tens.how many of the same numbers do they say down to zero? can only body show me how to work out please,thankss
just list the numbers:
140 120 100 80 60 40 20 0
120 110 100 90 80 70 60 50 40 30 20 10 0
So, how many numbers are in both lists?