Saturday

April 18, 2015

April 18, 2015

Posted by **P.Smith** on Saturday, February 6, 2010 at 5:05pm.

A student took out two loans totaling $10,000 to help pay for college expenses. One loan was at 8% simple interest, and the other was at 10%. After one year, the student owed $840 in interest. Find the amount of the loan at 10%.

- math -
**Damon**, Saturday, February 6, 2010 at 5:22pmx at .1 and y at .08

y = 10,000-x

.1x + .08y = 840

so substitute

.1x + .08 (10,000-x) = 840

- math -
**Reiny**, Saturday, February 6, 2010 at 5:23pmx + y = 10000

.1x + .08y = 840

suggestion:

multiply the second by 100

then the first by 8 and subtract them

- math -
**P.Smith**, Saturday, February 6, 2010 at 9:34pmThanks!! You are all the best.

**Answer this Question**

**Related Questions**

College Algebra - 4. Translate the problem into a pair of linear equations in ...

College Algebra - Translate the problem into a pair of linear equations in two ...

algebra - Translate the problem into a pair of linear equations in two variables...

College Algebra - Translate the problem into a pair of linear equations in two ...

algebra - i need help with these problems (either a solution or how to plug them...

systems word problems - the sum of two numbers is 11. their product is 30. find ...

Math - How would you solve this problem?: x2 + y2 = 25 x2 - y = 5 You have to ...

Geometry :( - this maths problem is wrecking my head.... 1.find the points of ...

quick question regarding equations - I know there are methods out there but what...

Substitution Method - Use the Substitution method to solve the system of ...