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Jay is twice the age of Sandy and 2 years younger than Mike Mike is seven years older than Sandy How old is Jay?
Wiki User
∙ 8y ago
Jay is 10 years old, Sandy is 5 years old, and Mike is 12 years old.
J = Jay's age
S = Sandy's age
M = Mike's age
J = 2S
J = M - 2
M = S + 7
Substitute S + 7 for M in the second equation, and J = (S + 7) - 2
J = 2S
J = S +5
2S = S +5
S = 5 and J = 10
-checking original equations
10 = 2 x 5
10 = 12 - 2
12 = 5 + 7
Wiki User
∙ 8y ago
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