SOLUTION: coin collector had 6 coins for sale
one he price @15,16,18,19,20,31 he sold all but one of the coins
to 2 people one payinng 2xs as much as the other one
which coin did he ke
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-> SOLUTION: coin collector had 6 coins for sale
one he price @15,16,18,19,20,31 he sold all but one of the coins
to 2 people one payinng 2xs as much as the other one
which coin did he ke
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Question 416972: coin collector had 6 coins for sale
one he price @15,16,18,19,20,31 he sold all but one of the coins
to 2 people one payinng 2xs as much as the other one
which coin did he keep Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! I just tried every single number that could be the one left out
First I let = the amount one person paid and =
amount other person paid. , so the sum of
what they bought must be divisible by
The only way I could arrive at this is if the coin costing 20
is left out. Then , so if
1 person bought 33 worth of coins
The other bought 66 worth
and
So, he kept the coin costing 20
