Riddle #1073

cleanlogicmath

Train's length

A 400 yard long train, travelling at 30 mph, enters a 4.5 mile long tunnel. How long will elapse between the moment the front of the train enters the tunnel and the moment the end of the train clears the tunnel?
9 minutes and 27.2727 seconds.
92.02 %
31 votes

Similar riddles

See also best riddles or new riddles.

logicmathshort

Three brothers

Dean Sam and Castiel are three brothers. Interestingly their current age is prime. What's more interesting that difference between their ages is also prime. How old are they?
Sam : 2 Dean : 5 Castiel : 7 Age diff 7 - 2 = '5' is prime 7 - 5 = '2' is prime 5 - 2 = '3' is prime
93.22 %
37 votes

logicmathshort

Eight eights

Using eight eights and addition only, can you make 1000?
888 + 88 + 8 + 8 + 8 = 1000
93.22 %
37 votes

logicmath

Pizza

How can you divide a pizza into 8 equal slices using only 3 straight cuts?
Cut 1: Cut the pizza straight down the middle into two halves. Cut 2: Keeping the two halves in the place, cut the pizza straight down the middle at right angles to the first cut (you will be left with 4 equal quarters) Cut 3: Pile the 4 quarters on top of each other and cut through the middle of the pile. You will be left with 8 equal slices.
93.22 %
37 votes

logicmath

Trains

A train leaves from Halifax, Nova Scotia heading towards Vancouver, British Columbia at 120 km/h. Three hours later, a train leaves Vancouver heading towards Halifax at 180 km/h. Assume there's exactly 6000 kilometers between Vancouver and Halifax. When they meet, which train is closer to Halifax?
Both trains would be at the same spot when they meet therefore they are both equally close to Halifax.
92.86 %
35 votes

logicmathshort

Three positive whole numbers

Find three positive whole numbers that have the same answer added together or when multiplied together.
1,2, & 3. 1 x 2 x 3 = 6 and 1 + 2 + 3 = 6
92.86 %
35 votes

logicmathshort

An electric train

If an electric train is going east at 60 miles an hour and there is a strong westerly wind, which way does the smoke from the train drift?
here is no smoke coming from electric trains.
92.02 %
31 votes

cleanlogic

What are the words?

Find words to fit the clues, all the words end in the same three letters. _ _ _ _ _ _ Eat quickly _ _ _ _ _ _ Unverified story _ _ _ _ _ _ _ An outline
Devour, rumour and contour.
92.02 %
31 votes