junioratongi134 junioratongi134
  • 23-04-2017
  • Mathematics
contestada

Paulina invested $10,000 at two different rates, 4% and 6%. If her total interest income was $470, how much did she invest at each rate.

Respuesta :

CodrutRadu
CodrutRadu CodrutRadu
  • 23-04-2017
a+b=10000 (1)

4%a+6%b = 470
4a+6b = 47000 (2)

(1)*6 =>
6a+6b = 60000 (3)

(3)-(2)=>
2a=13000 =>

a = 6500
b = 3500
Answer Link
Aliwohaish12
Aliwohaish12 Aliwohaish12
  • 23-04-2017
0.04x+0.06(10000-x)=470
Solve for x
X=6500 at 4%
10000-6500=3500 at 6%
Answer Link

Otras preguntas

please help...asap it's for tommorow
6 is what percent of 8
explain how a table cn be used to find the rate of change?
Which of the following is true? Question options: Water is important to some organisms. Some substances must be dissolved in water before they can be used
Which fraction is equivalent to -(6/-7) A) -(6/7) B) (-6/7) C) (6/-7) D) (-6/-7)
Fine the circumference of the semicircle with a radius of 5
an athlete is training to run a marathon. she plans to run 2 miles the first week. she increases the distance by 8% each week. write the function.
Find it ASAP What is the whole 85% of 17
What has been the history of the black religious leadership in american politics?
How did western powers gain greater trading rights with China?