IDNLearn.com: Your trusted source for finding accurate and reliable answers. Join our community to receive prompt and reliable responses to your questions from experienced professionals.

PLEASE HELPPP AND EXPLAIN

Maggie is taking out a student loan for $2,600. She plans on paying off the
loan in 3 years. At the end of 3 years, Maggie will have paid $390 in interest.
What is the simple interest


Sagot :

Answer:

5%

Step-by-step explanation:

Let the interest rate be x100

So we have for simple interest: x100×$2600=$390

This is the same as: ddddddddddx×$2600100=$390

x×$2600100=$390

Divide both sides by $26.

x×$26$26=$390$26

x×1=$390$26

x=15

But x is from x100

The % symbol is like a unit of measurement and one that is worth 1100

So 15100d→d15×1100d→d15×%→15%

But this is over 3 years so the annual interest rate is d15%3=5%