Monday

October 20, 2014

October 20, 2014

Posted by **Bella** on Monday, October 7, 2013 at 8:19am.

(if you would,just give me the formula and i'll take it from there)

thank you

- Math -
**Reiny**, Monday, October 7, 2013 at 8:52amI will do it using two variables

let the original 3% investment be x

let the original 5% investment by y

.03x + .05y = 1160 or 3x + 5y = 116000

after stated increase in each investment:

.03(1.25x) + .05(1.4y) = 1570

or after multiplying by 100

3.75x +7y = 157000

times 4

15x + 28y = 628000

you now have 2 equations in 2 unknowns, take it from there. (y=16000 , x = 12000)

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