Question

Nico is saving money for his college education. He invests some money at 5% and $1900 less than the amount at 3%. The investments produced a total of $143 interest in 1 yr. How much did he invest at each rate??
@ILovePuppiesLol @adrynicoleb

Answer 1

Hello, we're sorry for the inconvenience but us helpers only give help as volunteers, we don't get anything in exchange. That is why there are not a lot of us around... Please be patient and be as clear as you can with your questions :)

Answer 2

u can tag others if u want!!

Answer 3

I'm busy atm :(

Answer 4

ok

Answer 5

let hom invest $x at 5%
so he invests x - 1900 at 3 %

Answer 6

after 1 year he gets $0.05x at 5%
adn $ (x - 1900)0.03 at 3%

these 2 add up to $143 so we have the equation

0.05x + 0.03(x - 1900) = 143

can you solve this for x?

Answer 7

first distribute the 0.03 over the parentheses;

0.05x + 0.03x - 0.03*1900 = 143
0.08x - 57 = 143

can you continue and find the value of x?

Answer 8

add 57 to both sides of the equation

0.08x - 57 = 143
+57 +57
0.08x = 200

now divide right side by 0.08 and you have the values of x , the amount invested at 5%

Answer 9

i got 2500 out of that

Answer 10

thats correct
so all you need do to find amoubt invested at 3* is subtract 1900 from 2500

Answer 11

600 invested at 3%

Answer 12

yep

Answer 13

ok? any questions?

Answer 14

i have more ill post them