**Impossible Math Problem - 4 November**

Suppose you drive to a picnic spot at 20 mph, then how fast you must go while returning back home on the same route such that your average speed becomes 40 mph ?

**For Solution :**Click Here

This Blog is a collection of brain teasers, puzzles (maths,fun,brain etc), riddles,Questions, Quiz.

Suppose you drive to a picnic spot at 20 mph, then how fast you must go while returning back home on the same route such that your average speed becomes 40 mph ?

Subscribe to:
Post Comments (Atom)

Difficulty Level 3/5
(689)
Logic Puzzles
(459)
Difficulty Level 4/5
(430)
Riddles
(364)
Difficulty Level 2/5
(349)
Maths Puzzles
(331)
Picture Puzzles
(308)
Trick Teasers
(270)
Popular Puzzles
(208)
Rebus Puzzles
(149)
Humor Puzzles
(147)
Interview Puzzle
(118)
Series Puzzles
(118)
What Word Am I
(95)
Difficulty Level 1/5
(90)
Trivia
(74)
Mystery Puzzles
(71)
Equation Puzzles
(62)
Difficulty level 5/5
(51)
Murder Mystery Puzzles
(43)
Probability Puzzles
(39)
Square Count
(39)
Who Am I
(36)
IAS-EXAMS
(34)
Science Puzzles
(30)
Cipher Puzzles
(28)
Situation Puzzles
(28)
Algebra
(23)
Puzzles of Age
(21)
Read Between Lines Puzzles
(18)
Google Interview Puzzle
(17)
Microsoft Interview Puzzles
(15)
Time Distance Problem
(14)
statement
(14)
MatchSticks-Riddles
(12)
Odd One Out
(12)
Relationship Puzzles
(11)
Story Puzzles
(10)
Cards
(9)
Paradox Puzzles
(8)
Classic
(6)
Best Of 2011
(5)
Directional Puzzles
(5)
clever
(5)
Brain-Twister
(4)
Mind Games
(4)
Analytical
(3)
What Does This Text Mean
(3)
CHALLENGING
(2)
Double Meaning
(2)
Acronym
(1)
Measure
(1)
Suduko
(1)
Video Riddle
(1)
coin-Puzzles
(1)
m
(1)
pop
(1)
triv
(1)

According to the formula Average speed =(Total Distance travel/Total time taken)

ReplyDeleteif A is the distance-then total distance travel in to and fro is 2A

Time taken while going is A/20

Time taken while cmg is A/X ( X is the speed )

Average speed = 2A/((A/20)+(A/X)) =40

Solving this , we get AX= AX+20

Conclusion: It is quite impossible to get average speed of 40MPH in this case

Not possible as in the onward journey you consume the total time required to make the average as 40 kmph

ReplyDelete60 mph

ReplyDeletenot possible

ReplyDelete