Posted by **Anonymous** on Thursday, November 11, 2010 at 9:15pm.

the sum of two decimals numbers is 3.9. Their diffrence is 0.9, and their product is 3.9. What are the two numbers

- 6th grade -
**jai**, Thursday, November 11, 2010 at 9:28pm
first represent unknowns using variables:

let x = first decimal

let y = second decimal

then set up equations using conditions given:

(1) x + y = 3.9 (according to first statement)

(2) x - y = 0.9 (according to second statement)

(3) xy = 3.9

i think there's something wrong here because you have more equations than unknowns,, please check your typing.

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