Posted by **amelie** on Monday, October 18, 2010 at 5:37pm.

If Leah is 6 years older than Sue, and John is 5 years older than Leah, and the total of their ages is 41. Then how old is Sue? How do you know what and, is, and older mean in mathematical terms?

- math -
**Reiny**, Monday, October 18, 2010 at 5:42pm
Since Leah is mentioned twice, let's define her age as x yrs.

then Sue is x-6

and John is x+5

so x + x-6 + x+5 = 41

3x = 42

x = 14

Leah is 14

Sue is 8

John is 19

- math -
**Ms. Sue**, Monday, October 18, 2010 at 5:44pm
s + s + 6 + s + 11 = 41

3s + 17 = 41

3s = 41 - 17

3s = 24

s = 8

Sue is 8

Leah is 14

John is 19

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