Model this situation w/ a linear system:
Melissa borrowed $10, 000 for her university tuition. She borrowed part of the money at an annual interest rate of 2.4 % and the rest of the money at an annual rate of 4.5 %. Her total annual interest payment is $ 250.50
a.) a + b = 10 000 & 0.024a + 0.045b = $250.50
b.) 2a + 2b = 10 000 & 0.024a + 0.045 b = $250.50
c.) 0.024a + b = 10 000 & a + 0.045b = $250.50
d.) a + b = $250.50 & 0.024a + 0.045b = 10 000
which letter is correct?
2 answers
What do you think, and why?
no idea . please help!
1 answer