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The price of a stock increased by $3/day for six days, then decreased by $2/day for three days and then decreased by $5/day for two more days. If the final price of the stock was $39, what was its starting price?

Guest Jun 18, 2017
 #1
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$3 x 6 = $18 increase in the price of the stock.

[$2 x 3] + [$5 x 2] = $6 + $10 =$16 decrease in stock price.

Let the starting price =P

P + $18 - $16 = $39

P =$39 -$18 + $16 =$37 - The starting price of the stock.

Guest Jun 18, 2017
 #2
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Let the starting price be x

Satrting Value=x

The price of a stock increased by $3/day for six days,

new value = x+3*6 = x+18

 

then decreased by $2/day for three days

new value = x+18 - 2*3 = x+12

 

and then decreased by $5/day for two more days.

new value = x+12 -5*2 = x+2

 

If the final price of the stock was $39, what was its starting price?

 

x+2=39

x=37

 

The starting price was $37

Melody  Oct 26, 2017

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