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snack issues

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by AIM TO CRACK GMAT » Mon Dec 17, 2012 11:32 pm
30% of major airline companies equip their planes with wireless internet access. 70% of major airlines offer
passengers free on-board snacks. What is the greatest possible percentage of major airline companies that
offer both wireless internet and free on-board snacks?

a)21% b)30% c) 40% d)50% e)70%



i saw d grid way but cudnt solve it.... plzzzz help me out guys!!
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by puneetkhurana2000 » Mon Dec 17, 2012 11:54 pm
Answer is 30%, as maximum overlap possible is 30%. I don't think you need a grid for this.
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by aman88 » Mon Dec 17, 2012 11:56 pm
30%; because we are looking for a maximum number of companies that provide both wireless internet and free on-board snacks. Maximum can only be 30 because we have a maximum of 30% companies providing wireless, so the number cannot exceed 30 for wireless.

If it was 40% wireless and 60% snacks, then the right answer would have been 40%.

The grid form is not required here.

IMO B.
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by AIM TO CRACK GMAT » Tue Dec 18, 2012 12:00 am
aman88 wrote:30%; because we are looking for a maximum number of companies that provide both wireless internet and free on-board snacks. Maximum can only be 30 because we have a maximum of 30% companies providing wireless, so the number cannot exceed 30 for wireless.

If it was 40% wireless and 60% snacks, then the right answer would have been 40%.

The grid form is not required here.

IMO B.

Yeappp.... thts d answerr!! It s 30%
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by AIM TO CRACK GMAT » Tue Dec 18, 2012 12:04 am
but i yet din get it ???? people who get snacks on board can also get wirelesss internet.... so y 30%?????? it cud b 70???.. real sorry 4 such silly questions....i suk at math big tym
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by AIM TO CRACK GMAT » Tue Dec 18, 2012 12:14 am
but i yet din get it ???? people who get snacks on board can also get wirelesss internet.... so y 30%?????? it cud b 70???.. real sorry 4 such silly questions....i suk at math big tym
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by digvijay.rajput » Tue Aug 06, 2013 2:11 am
AIM TO CRACK GMAT wrote:but i yet din get it ???? people who get snacks on board can also get wirelesss internet.... so y 30%?????? it cud b 70???.. real sorry 4 such silly questions....i suk at math big tym

As only 30% of the airlines have wireless internet. So, the maximum chances that a person can use wireless internet is 30%.
Also, since 70% of the airlines provide snacks on board. So, the maximum chances that a person can have snacks on board is 70%.
Now, if take the intersection among both these cases, then it will come out to be 30%

It cannot be 70 as only 30% of the airlines offer wireless internet.

Hope you got the answer...
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