ELA and Math with Mrs. D

"For never was a story of more woe/ Than this of Juliet and her Romeo."

Math 7 Interest Word Problem


       Maggie borrowed $3,600 to buy a used car.  She will be paying $131.50 each month for the next 36 months.  Find the simple interest rate for her loan.
 
First find the total amount of money Maggie will pay.
$131.50 x 36 = $4,734
Maggie will pay a total of $4,734.
 
 
She will pay $4,734. - $3,600 or $1,134 in interest.
 
 
The loan will be for 36 months or 3 years.
 
Use the simple interest formula to find the interest rate.
 
Interest = principal x rate x time
1,134    = 3,600       x r       x 3
1,134    = 10,800 r
0.105    = r
 
 
The simple interest rate is 10.5%
 
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A 17 Million Digit Prime Number WOW

A new prime number, thought to be the largest ever identified, has been discovered by a professor at the university of Central Missouri. Curtis Cooper used a giant computer network to do the work to find the 17-million digit number - which is a number divisible only by itself and by one.

A 17 Million Digit Prime Number WOW