Today Puzzle #575
Puzzle No. 575 鈥� Wednesday 25 September
On Friday 75 people turned up at Area 51, a secretive military base in Nevada rumoured to house secrets about extra terrestrial life. If four times as many people want to travel in a spacecraft compared with just seeing one, and each craft can take up to 8 people, how many space craft are needed to take all the passengers away from earth?
Today’s #PuzzleForToday has been set by Dr Shaun Fitzgerald, Director of The Royal Institution
Click here for the answer
If 4 in 5 people want to travel, then this is (75/5)x4=60 travellers. 60/8=7.5. Therefore 8 craft are needed although not all of them will be full.
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