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April 7th, 2014, 03:57 AM  #1 
Newbie Joined: Apr 2014 From: Australia Posts: 10 Thanks: 0  sorry, really need some help: shrinking and expanding
hi guys, really struggling with this. if anyone could help me it would be really appreciated thanks! Intelligent life forms from the Alzir planetary system have a unique way of dealing with foreign stellar visitors, a shrink ray. Alzirians of have been heard saying “A shrunken problem is no problem at all”, often after a unlucky visitor has been shrunk. Captain Kirk and his crew met a similar fate and after the starship Enterprise and occupants where reduced by 87% of their original size. After much diplomacy and explaining that the United Federation of Planets were peaceful explorers, the Alzirians agreed to return them to normal size. Fortunately by switching polarity the shrink ray becomes an expansion ray. The return to normal size (a) by what expansion factor would the Enterprise and crew need to undergo? (b) what would be the percentage increase required? 
April 7th, 2014, 08:27 AM  #2 
Math Team Joined: Dec 2013 From: Colombia Posts: 7,342 Thanks: 2465 Math Focus: Mainly analysis and algebra 
I've given you some help with this on the Elementary Math board.


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expanding, factor, percantage, shrinking 
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