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mr.mancho my great dane ate 125 hot dogs over a five day period. each day he ate seven more hot dogs than on the previous day. how many hot dogs did he eat on the first day.....

http://www.jiskha.com/display.cgi?id=1287095215

You need to use the strategy of working backwards

day 5= 125 hot dogs
day 4= 125-7=???
day 3= ???-7 etc.
day 2=
day 1=

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