Brain teasers.
Elder User
Joined: Dec 2006
Posts: 913
Likes: 0
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
Post Fiend
Joined: Apr 2004
Posts: 6,473
Likes: 4
From: Lafayette, IN
90 MPH is NOT the answer. Stu37d got it--it's impossible. To average 60 MPH for 2 miles, one must complete the 2 miles in 120 seconds, or 2 minutes. Driving the first mile at 30 MPH takes 2 minutes, so the next mile would have to be completed instantaneously to maintain the 60 MPH average.
Proof that 90 MPH doesn't work:
1 mile @ 30 MPH takes 2 min.
1 mile @ 90 MPH takes 40 seconds.
2 miles in 2m40s is a 45 MPH average.
You cannot average speed by itself--it must be weighted by the distance covered.
And, yes, time is part of the original problem--miles PER HOUR.
Jason
Proof that 90 MPH doesn't work:
1 mile @ 30 MPH takes 2 min.
1 mile @ 90 MPH takes 40 seconds.
2 miles in 2m40s is a 45 MPH average.
You cannot average speed by itself--it must be weighted by the distance covered.
And, yes, time is part of the original problem--miles PER HOUR.
Jason
Post Fiend
Joined: Apr 2004
Posts: 6,473
Likes: 4
From: Lafayette, IN
Assuming the holes are a standardized size, so that a "half hole" is half the size of a "hole", even though a "half hole" is still a hole in and of itself, 1 man at the rate mentioned would take 3 days to dig half a hole.
6 men take 6 days to dig 6 holes, that means that each of the 6 men takes 6 days to dig 1 hole, so each man would be half done with his hole in 3 days, or 3 holes would be fully dug.
Jason
6 men take 6 days to dig 6 holes, that means that each of the 6 men takes 6 days to dig 1 hole, so each man would be half done with his hole in 3 days, or 3 holes would be fully dug.
Jason
Thread
Thread Starter
Forum
Replies
Last Post
