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Three individuals form a partnership and agree to divide the profits equally. X invests $9,000. Y invests $7,000, Z invests $4000. If the profits are $4,800, how much less does X receive than if the profits were divided in proportion to the amount invested?



Answer :

first you want to know the profits of the three ppl. so: 
4800/3=1600
then u make an equation with proportions: 9x+7y+4x=4800
add the invests: 9+7+4=20x and 4800 would stay same. 
then divide 20 by 4800 to get 240 
now plug the investments to 240 
9 times 240 is 2160 
7 times 240 1680 
4 times 240 is 960
last you must subtract to find x as the investments 
take 1600 and subtract it by 2160 and you get x=560 
$560 is your answer 
hope i helped :D

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