The answer to this equation is 2278221
Answer:
Step-by-step explanation:
If x represents the amount invested at 7%, then the amount invested at 13% is x+300. Lydia's total interest is ...
0.07x +0.13(x +300) = 252
0.20x = 213 . . . . . subtract 39
x = 213/0.20 = 1065
Lydia has $1065 invested at 7% and $1365 invested at 13%.
Answer: -24
Step-by-step explanation:
![\bf \underline{Given : }](https://tex.z-dn.net/?f=%20%5Cbf%20%5Cunderline%7BGiven%20%3A%20%7D)
- One number is 8 more than another.
- Sum of the two numbers is 166.
![\bf \underline{To \: find \: out : }](https://tex.z-dn.net/?f=%20%5Cbf%20%5Cunderline%7BTo%20%5C%3A%20find%20%5C%3A%20out%20%3A%20%7D)
Find the two numbers.
![\bf \underline{Solution : }](https://tex.z-dn.net/?f=%20%5Cbf%20%5Cunderline%7BSolution%20%3A%20%7D)
Let the one number be x.
Then,another number = x + 8
<u>According to the question </u><u>,</u>
Sum of the two numbers is 166. [ Given ]
![\sf\implies \: x + x + 8 = 166](https://tex.z-dn.net/?f=%20%20%5Csf%5Cimplies%20%5C%3A%20x%20%2B%20x%20%2B%208%20%3D%20166)
![\sf \implies \: 2x + 8 = 166](https://tex.z-dn.net/?f=%20%5Csf%20%5Cimplies%20%5C%3A%202x%20%2B%208%20%3D%20166)
![\sf \implies \: 2x = 166 - 8](https://tex.z-dn.net/?f=%20%5Csf%20%5Cimplies%20%5C%3A%202x%20%3D%20166%20-%208)
![\sf\implies \: 2x = 158](https://tex.z-dn.net/?f=%20%20%5Csf%5Cimplies%20%5C%3A%202x%20%3D%20158)
![\sf \implies \: x = \cancel \dfrac{158}{2}](https://tex.z-dn.net/?f=%20%5Csf%20%5Cimplies%20%5C%3A%20x%20%3D%20%20%5Ccancel%20%5Cdfrac%7B158%7D%7B2%7D%20)
![\sf \implies \: x = 79](https://tex.z-dn.net/?f=%20%5Csf%20%5Cimplies%20%5C%3A%20x%20%3D%2079)
One number = x = 79
Another number = x + 8 = 79 + 8 = 87