ACT Math: Elementary Algebra Drill 5, Problem 1. How old is Jeremy's brother?
|ACT Math||Elementary Algebra|
|ACT Mathematics||Elementary Algebra|
|Elementary Algebra||Understanding algebraic operations|
Variables to express relationships
|Foreign Language||Arabic Subtitled|
|Product Type||ACT Math|
that we don't get to find out Jeremy's brother's name.
With short problems like this, it's a good idea not to get too attached to the characters.
OK so what is this question asking?
It wants us to translate English into...Mathlish.
So here we go:
Jeremy equals 1 plus the quantity 2 times his brother's age.
And we know that Jeremy is 17.
So we substitute 17 for J and get 17 equals 1 plus 2b.
Subtract 1 from both sides and we have 16 equals 2b.
Divide both sides by 2 and we get... 8.
Now take a second to say good-bye to Jeremy's brother. You won't be seeing him again.