SOLUTION: Joseph is six years older than his sister .their combined age is the same as their father their father's age .if their father is 50yrs old how old is joseph and her sister
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Question 1183468: Joseph is six years older than his sister .their combined age is the same as their father their father's age .if their father is 50yrs old how old is joseph and her sister Answer by ankor@dixie-net.com(22740) (Show Source):
You can put this solution on YOUR website! Joseph is six years older than his sister
j = s + 6
.their combined age is the same as their father's age .if their father is 50yrs old
j + s = 50
;
how old is joseph and her sister
rearrange the 1st equation and use elimination with 2nd equation
j - s = 6
j + s = 50
-------------- addition eliminates s, find j
2j + 0 = 56
j = 56/2
j = 28 yrs is Joseph's age
then
28 + s = 50
s = 50 - 28
s = 22 yrs is sister's age
:
confirm in the 1st equation
28 = 22 + 6
