squeak-
“Math? Yuck.”
-I’m with you there.
In school I enjoyed history, english and science, but math? not my slice of pi.
Rest assured the “Nines” puzzle does not use any complex equations.
Heres a great, big hint-
The first three characters of the equation are “99+”
I think the answer to your puzzle is about 34.3 MPH.
The logic I used is:
Since he traveled the same distance at the two different speeds, we calculate 2/3 * x = .5 * y with x+y = 60. The closest I can come is about x=25.7, y=34.3 (time) and 17.13 (distance). 2*17.13 is about 34.3
(I may not know what I’m talking about – math majors, please help).
zimby-
The answer to your second is “a river”