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1. Simple logic solution
5 years ago, Julio was 17 years younger than Adrianna, and at the same time, Anrianna was 2 times Julio age.
From it, it is OBVIOUS that 5 years ago Julio was 17 years and Andrianna wad 34 years old.
Hence, now Julio is 17+5 = 22 years old; Andrianna is 34+5 = 39 years old.
ANSWER. Julio is 22 years old now.
2. Simple Algebra solution
Let x be the Julio's age now.
Then Andrianna age is (x+17) years.
5 years ago Julio was (x-5) years old, while Andrianna was ((x+17)-5) = x+12 years old.
The problems says
2*(x-5) = x + 12, or
2x - 10 = x + 12
2x - x = 12 + 10,
x = 22. ANSWER
Solved.
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There is a bunch of lessons on age word problems
- Age problems and their solutions
- A fresh formulation of a traditional age problem
- Really intricate age word problems
- Selected age word problems from the archive
- Age problems for mental solution
in this site.
Read them and become an expert in solving age problems.
Also, you have this free of charge online textbook in ALGEBRA-I in this site
- ALGEBRA-I - YOUR ONLINE TEXTBOOK.
The referred lessons are the part of this online textbook under the topic "Age word problems".
Save the link to this online textbook together with its description
Free of charge online textbook in ALGEBRA-I
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