SOLUTION: Rico invests some of his savings at 4% per year and an equal amount at 5 percent per year. His income totals Php 1800 a year. How much did Rico invest at each Rate ?

Question 934985: Rico invests some of his savings at 4% per year and an equal amount at 5 percent per year. His income totals Php 1800 a year. How much did Rico invest at each Rate ?
Answer by TimothyLamb(4379) (Show Source): You can put this solution on YOUR website!
x = amount invested at 4%
y = amount invested at 5%
---
x = y
0.04x + 0.05y = 1800
---
put the system of linear equations into standard form
---
x - y = 0
0.04x + 0.05y = 1800
---
copy and paste the above standard form linear equations in to this solver:
https://sooeet.com/math/system-of-linear-equations-solver.php
---
solution:
x = amount invested at 4% = 20000
y = amount invested at 5% = 20000
---
Free algebra tutoring live chat:
https://sooeet.com/chat.php?gn=algebra
---
Solve and graph linear equations:
https://sooeet.com/math/linear-equation-solver.php
---
Solve quadratic equations with quadratic formula:
https://sooeet.com/math/quadratic-formula-solver.php
---
Solve systems of linear equations up to 6-equations 6-variables:
https://sooeet.com/math/system-of-linear-equations-solver.php
---
RELATED QUESTIONS
Arnel invest some of his savings at 4 percent per year and an equal amount at 7 percent... (answered by JBarnum)

Sam invests some of his savings at 5% and an equal amount at 6% per year. His income... (answered by josmiceli)

Joshua invested some of his savings at 5% per year and an equal amount at 8% per year.... (answered by mananth)

Lea invests some amount at 4% per year and equal amount of 5%per year. Her income totals... (answered by jorel555)

Mr collins invested a sum at 4% and an equal amount at 6%. His retun totals $40 per year. (answered by checkley75)

Rowan invested a certain amount of money at 5% per year and an amount thrice as large at... (answered by Earlsdon)

Mario invested part of his money at 8% per year and twice that amount at 5% per year. If... (answered by Boreal)

George decided to invest a certain amount of money, some at an annual interest rate of... (answered by greenestamps)

6. Alternative A: How much will be the total amount that John will get if he invests Php (answered by ikleyn)