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An investor has an account with stock from two different companies. Last year, his stock in Company A was worth 
$1600 and his stock in Company B was worth 
$1750. The stock in Company A has decreased 22% since last year and the stock in Company B has decreased 
14%. What was the total percentage decrease in the investor's stock account? Round your answer to the nearest tenth (if necessary).
Answer:

An investor has an account with stock from two different companies. Last year, his stock in Company A was worth $1600 \$ 1600 and his stock in Company B was worth $1750 \$ 1750 . The stock in Company A has decreased 22%22\% since last year and the stock in Company B has decreased 14% 14 \% . What was the total percentage decrease in the investor's stock account? Round your answer to the nearest tenth (if necessary).\newlineAnswer:

Full solution

Q. An investor has an account with stock from two different companies. Last year, his stock in Company A was worth $1600 \$ 1600 and his stock in Company B was worth $1750 \$ 1750 . The stock in Company A has decreased 22%22\% since last year and the stock in Company B has decreased 14% 14 \% . What was the total percentage decrease in the investor's stock account? Round your answer to the nearest tenth (if necessary).\newlineAnswer:
  1. Calculate Stock Value Company A: Calculate the new value of the investor's stock in Company A after a 2222\% decrease.\newlineOriginal value of stock in Company A: $1600\$1600\newlinePercentage decrease: 22%22\%\newlineDecrease in value: $1600×(22/100)=$352\$1600 \times (22/100) = \$352\newlineNew value of stock in Company A: $1600$352=$1248\$1600 - \$352 = \$1248
  2. Calculate Stock Value Company B: Calculate the new value of the investor's stock in Company B after a 1414% decrease.\newlineOriginal value of stock in Company B: $1750\$1750\newlinePercentage decrease: 14%14\%\newlineDecrease in value: $1750×(14100)=$245\$1750 \times (\frac{14}{100}) = \$245\newlineNew value of stock in Company B: $1750$245=$1505\$1750 - \$245 = \$1505
  3. Calculate Total Original Value: Calculate the total original value of the investor's stock account.\newlineTotal original value = Value of stock in Company A + Value of stock in Company B\newlineTotal original value = $1600\$1600 + $1750\$1750 = $3350\$3350
  4. Calculate Total New Value: Calculate the total new value of the investor's stock account.\newlineTotal new value = New value of stock in Company A + New value of stock in Company B\newlineTotal new value = $1248\$1248 + $1505\$1505 = $2753\$2753
  5. Calculate Total Decrease: Calculate the total decrease in value of the investor's stock account.\newlineTotal decrease = Total original value - Total new value\newlineTotal decrease = $3350\$3350 - $2753\$2753 = $597\$597
  6. Calculate Total Percentage Decrease: Calculate the total percentage decrease in the investor's stock account.\newlineTotal percentage decrease = (Total decrease/Total original value)×100%(\text{Total decrease} / \text{Total original value}) \times 100\%\newlineTotal percentage decrease = ($597/$3350)×100%(\$597 / \$3350) \times 100\%\newlineTotal percentage decrease \approx 1717.88\%