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andreyandreev [35.5K]
3 years ago
9

Isabella has twice as much money invested at 4% as she has invested at 3%, and she has $500 more invested at 5% than she has at

3%. If the annual income from these three investments is $2025, how much does she have invested at 4%
Mathematics
1 answer:
adell [148]3 years ago
3 0
Invested at 3% = x
invested at 4% = 2x
invested at 5% = x+500

0.03x + 0.04(2x) + 0.05(x+500) = 2025
0.03x + 0.08x +0.05x +25 = 2025
0.16x = 2000
x= 12,500
4% = 2x = 12,500 * 2 = $25,000
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