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# On a camping trip ,'x' campers each paid 'y' dollars for

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On a camping trip ,'x' campers each paid 'y' dollars for [#permalink]  20 Mar 2004, 21:04
On a camping trip ,'x' campers each paid 'y' dollars for food.What percent of the total food expenses did each camper pay?

1) If there were one few camper ,each camper would owe 1 dollar more.

2) If there were half as many campers ,each camper would owe 7 dollars more.

Vivek.
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Find xy/x

(1) xy - (x-1)y = x-1

y = x -1

(2) xy - (xy/2) = 7x/2

y = 7

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