Defining variables Certificate purchase = $2,400
Bond investment = x (to be determined)
Bond earns 3% simple interest per year
Goal: combined net gain of $600 after 2 years
Optimistic certificate scenario: gains 5% of $2,400 per year
Pessimistic certificate scenario: loses 10% of $2,400 per year
Calculating certificate gains/losses =>
Optimistic: Gain per year = 5% of $2,400
= 120 Over 2 years: 2 × 120
= 240 2×120=240
Pessimistic: Loss per year = 10% of $2,400 = 240
Over 2 years: 2 × 240 = 480
2×240=480 loss
Expressing bond gains Bond earns 3% simple interest per year : 2-year gain = 2 * 0.03 * x =0.06x
Writing equations for total net gain:
Net gain = Certificate gain + bond gain = $600
Optimistic: Certificate gain + Bond gain = 600
240+0.06x=600
0.06x=600−240=360
x = 360 / 0.06 = 6000
Optimistic bond investment = $6,000
Pessimistic: Certificate gain + Bond gain = 600 Certificate gain + Bond gain= 600 Certificate loses $480 :
net gain = bond gain - 480 = 600 : 0.06x - 480 = 600
0.06 x = 600 + 480 = 1080
x=1080/0.06=18,000
Pessimistic bond investment = $18,000
Answer Optimistic: $6,000 and Pessimistic: 18,000
Bunuel
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An investor purchases a no interest certificate that he cannot sell for 2 years. He buys certificates with a total purchase price of $2,400. At the same time, he invests an additional sum in a treasury bond that earns 3% simple interest per year.
The investor’s goal is a combined net gain of $600 from the two investments after 2 years.
Two analysts give different projections for how the certificate’s market value will change over the two years. Under the optimistic projection, each year the market value increases by a fixed amount equal to 5% of the original $2,400 purchase price. Under the pessimistic projection, each year the market value decreases by a fixed amount equal to 10% of the original $2,400 purchase price.
In the table, select for
Bond investment, optimistic the amount the investor must invest in the bond to reach the $600 goal under the optimistic scenario, and select for
Bond investment, pessimistic the amount the investor must invest in the bond to reach the $600 goal under the pessimistic scenario. Make only two selections, one in each column.