SOLUTION: A's present age is 4 years more than B's age after 6 years.The sum of the present age of A and B together is 70 years. what is the present age of B

Algebra ->  Customizable Word Problem Solvers  -> Age -> SOLUTION: A's present age is 4 years more than B's age after 6 years.The sum of the present age of A and B together is 70 years. what is the present age of B      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 979697: A's present age is 4 years more than B's age after 6 years.The sum of the present age of A and B together is 70 years. what is the present age of B
Answer by josgarithmetic(39616) About Me  (Show Source):
You can put this solution on YOUR website!
Checking the description very carefully: A's present age is, means A=;
4 years more than B's age AFTER 6 years, means 4+B+6;
That transcribes into A=4%2B%28B%2B6%29. This becomes one of the equations for the system.

Present age sum becomes the other equation for the system, plainly describing A%2BB=70.

Here is the system:
system%28A=4%2B%28B%2B6%29%2CA%2BB=70%29

The steps:

system%28A=B%2B10%2CA%2BB=70%29

%28B%2B10%29%2BB=70
2B%2B10=70
B%2B5=35
highlight%28highlight%28B=30%29%29------THIS IS THE VALUE FOR B.