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?
$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.
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