At the end of three days, a stock was selling at $36 per share. On the preceding three days there had been a gain of $7 per share, a loss of $9 per share and a gain of $6 per share. What was the price per share at the beginning of the three days?
I got $40, is this correct?
Yes.
Is (-33)-(+42) the answer-75
and(-36)-(+24) is that -12
Your first answer is correct.
To find the price per share at the beginning of the three days, we can work backwards. Since we know that the stock ended at $36 per share, we can find the price before the last gain of $6 per share by subtracting the gain from the ending price:
$36 - $6 = $30 per share.
Now, we have the price before the gain of $6 per share. To find the price before the loss of $9 per share, we need to add the loss back to the previous price:
$30 + $9 = $39 per share.
Finally, to find the price before the first gain of $7 per share, we need to subtract the gain from the previous price:
$39 - $7 = $32 per share.
Therefore, the price per share at the beginning of the three days was $32, not $40.