Posted by **jalen** on Sunday, December 13, 2009 at 9:15pm.

the sum of two decimal numbers is 5.3. their difference is 1.7 and there product is 6.3 what are the two numbers?

- math -
**DrBob222**, Sunday, December 13, 2009 at 9:22pm
x = one number

y = other number.

===============

x+y=5.3

x-y=1.7

Solve for x and y.

You don't need the other information but it can be used if you wish.

- math -
**Reiny**, Sunday, December 13, 2009 at 9:24pm
x+y = 5.3

x-y = 1.7

add them

2x = 7.0

x = 3.5

then y = 1.8

the info that their product is 6.3 was redundant, but checked out.

- math -
**Rudy**, Sunday, December 13, 2009 at 9:25pm
1.8 and 3.5. I just used guess and check. I knew that the numbers had to be under 5.3. Also, the number in the tenths place had to add up to 13 or 3, so 1.8 and 3.5.

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