An investor has an account with stock from two different companies. Last year, his stock in Company A was worth $2640 and his stock in Company B was worth $3300. The stock in Company A has decreased 20% since last year and the stock in Company B has decreased 21%. What was the total percentage decrease in the investor's stock account? Round your answer to the nearest tenth (if necessary).Answer:
Q. An investor has an account with stock from two different companies. Last year, his stock in Company A was worth $2640 and his stock in Company B was worth $3300. The stock in Company A has decreased 20% since last year and the stock in Company B has decreased 21%. What was the total percentage decrease in the investor's stock account? Round your answer to the nearest tenth (if necessary).Answer:
Calculate Company A Stock: Calculate the new value of the investor's stock in Company A after a 20\% decrease.Original value of Company A stock: $2640Percentage decrease: 20%Decrease in value: $2640×0.20=$528New value of Company A stock: $2640−$528=$2112
Calculate Company B Stock: Calculate the new value of the investor's stock in Company B after a 21\% decrease.Original value of Company B stock: $3300Percentage decrease: 21%Decrease in value: $3300×0.21=$693New value of Company B stock: $3300−$693=$2607
Calculate Total Original Value: Calculate the total original value of the investor's stock account.Total original value = Value of Company A stock + Value of Company B stockTotal original value = $2640 + $3300 = $5940
Calculate Total New Value: Calculate the total new value of the investor's stock account.Total new value = New value of Company A stock + New value of Company B stockTotal new value = $2112 + $2607 = $4719
Calculate Total Decrease: Calculate the total decrease in value of the investor's stock account.Total decrease = Total original value - Total new valueTotal decrease = $5940 - $4719 = $1221
Calculate Total Percentage Decrease: Calculate the total percentage decrease in the investor's stock account.Total percentage decrease = (Total decrease/Total original value)×100%Total percentage decrease = ($1221/$5940)×100%Total percentage decrease = 0.2055×100%Total percentage decrease = 20.55%Round to the nearest tenth: 20.6%
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