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Dima020 [189]
3 years ago
11

Country Day's scholarship fund receives a gift of $ 195000. The money is invested in stocks, bonds, and CDs. CDs pay 2.25 % inte

rest, bonds pay 5.2 % interest, and stocks pay 7.8 % interest. Country day invests $ 35000 more in bonds than in CDs. If the annual income from the investments is $ 11040 , how much was invested in each vehicle?
Business
1 answer:
irakobra [83]3 years ago
5 0

Answer:

$11,300 is invested in CDs

$46,300 is invested in bonds

$107,400 is invested in stocks

*I rounded to the nearest hundred

Explanation:

S = money invested in stocks

B = money invested in bonds

C = money invested in CDs

S + B + C = 165,000

B = C + 35,000

0.078S + 0.052B + 0.0225C = 11,040

S + C + 35,000 + C = 165,000

S + 2C = 130,000

0.078S + 0.052(C + 35,000) + 0.0225C = 11,040

0.078S + 0.052C + 1,820 + 0.0225C = 11,040

0.078S + 0.0745C = 9,220

S + 2C = 130,000

(0.078S + 0.0745C = 9,220) x 1 / 0.078

S + 2C = 130,000

S + 0.96C = 118,205

2C - 0.96C = 130,000 - 118,205

1.04C = 11,795

C = 11,341 ≈ 11,300 (approximate number due to rounding errors)

B = 11,300 + 35,000 = 46,300

S = 165,000 - 46,300 - 11,300 = 107,400

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Explanation:

1. An extra $1,000 for every year that they are over the age of 21. If the person is A years of Age then the expression is 1,000 * (A - 21).

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