Asked by john
Sheri's age in 20 years will be the same as Jerry's age right now. Ten years from now, Jerry's age will be twice Sheri's. What are their present ages?
Answers
Answered by
bobpursley
S+20=J
J+10=2(S+10)
S-J=-20
-2S+J=10
add equations
-S=-10
S=10
J=30
J+10=2(S+10)
S-J=-20
-2S+J=10
add equations
-S=-10
S=10
J=30
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