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| 1. |
The total interest earned after one year when Php 100 000 is invested, part of 6% annual interest rate and the remaining part at 7.5% annual interest rate |
| Answer» X = amount of MONEY invested at 6%y = amount of money invested at 7.5%x+y = 100,000y = 100,000 - xInterest Earned for the 6% account = 0.06xInterest Earned for the 7.5% account = 0.075y = 0.075(100,000 - x) = 7500 - 0.075xAdd up the amounts:0.06x+0.075x = 0.135xSo we can GET as far as 0.135x. We can't go any further unless we know EITHER x or y. | |