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Mensa Question Here.
48 Answers
A helicopter covers its outward journey at 330 mph. It returns over exactly the same distance at 165 mph. What is the helicopters average speed over the entire journey? The answer is 220, but how? I got these cards fun, but some are really hard! Thank you for your answers.
Answers
the length of the journey is irrelevant, that's the point of the question, to realise what are the salient factors, this is not primarily about the arithmetic. The journey back always takes double the journey there, let's call the distance D, the average speed A and the Time T, so the total journey takes 3T thus: A=2S/3
09:52 Fri 12th Mar 2021
It was here, Peter ...
https:/ /www.th eanswer bank.co .uk/Qui zzes-an d-Puzzl es/Ques tion174 3796.ht ml#answ er-1281 2605
https:/
1965 Townend called it a matrix
and thanks for the ref/url - - - I just cant see the table or matrix
a matrix is what you say it is innit?
"In mathematics, a matrix is a rectangular array or table of numbers, "
oh lardee daa - I have been Newton heath far too long - like Hazza I am imprisoned but do not know it. And Prood is my Meghan or muse - er what colour are you by the way?
and thanks for the ref/url - - - I just cant see the table or matrix
a matrix is what you say it is innit?
"In mathematics, a matrix is a rectangular array or table of numbers, "
oh lardee daa - I have been Newton heath far too long - like Hazza I am imprisoned but do not know it. And Prood is my Meghan or muse - er what colour are you by the way?