Question 1132619: Robert is 10 years older than her brother. In 2 years, Robert will be three times as old as his brother. How old are they now?
Answer by ikleyn(52781)   (Show Source):
You can put this solution on YOUR website! .
Robert is 10 years older than  his brother.
In 2 years, Robert will be three times as old as his brother. How old are they now?
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From the condition, you have THIS :
In 2 years, Robert will be three times as old as his brother, and 10 yeas older than him.
Hence, in 2 years Robert will be 15 years old, while his brother will be 5 years old.
It means that now Robert is 15-2 = 13 years old, while his brother is 5-2 = 3 years old today. ANSWER
Solved. // Mentally, without using equations.
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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 problem
- 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
https://www.algebra.com/algebra/homework/quadratic/lessons/ALGEBRA-I-YOUR-ONLINE-TEXTBOOK.lesson
to your archive and use it when it is needed.
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