141. Stock Prices The price per share of Intel stock has
been up and down lately. On Monday it rose 2.75; on
Tuesday it rose 0.87; on Wednesday it dropped 1.12;
on Thursday it rose 0.52; and on Friday it fell 0.62.
What was the net change in Intel's stock price per
share for the week?

Respuesta :

The net change in Intel's stock price per share for the week rose up by 2.40.

Let x be the stock price of an Intel stock.

The stock prices of Intel stock have been going up and down.

On Monday, it rose by 2.75.

⇒ The new Stock price at the end of Monday is x + 2.75.

On Tuesday, it rose by 0.87.

⇒ The new stock price at the end of Tuesday is (x + 2.75) + 0.87 = x + 2.75 + 0.87 = x + 3.62

On Wednesday, it dropped by 1.12.

⇒ The new stock price at the end of Wednesday is (x + 3.62) - 1.12 = x + 2.50

On Thursday, it rose by 0.52.

⇒ The new stock price at the end of Thursday is (x + 2.50) + 0.52 = x + 3.02

On Friday, it fell by 0.62.

⇒ The new stock price at the end of Friday is (x + 3.02) - 0.62 = x + 2.40

At the end of Friday, the stock price is x + 2.40.

Therefore, the stock's price per share increased by 2.40 for this week.

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