SOLUTION: The book cost of Hiro’s biology book was $13.00 more than the cost of his history book. The cost of his English was $27.00 less than the cost of his history book. how do I know w

Algebra ->  Algebra  -> Inequalities -> SOLUTION: The book cost of Hiro’s biology book was $13.00 more than the cost of his history book. The cost of his English was $27.00 less than the cost of his history book. how do I know w      Log On

Ad: Algebrator™ solves your algebra problems and provides step-by-step explanations!
Ad: Algebra Solved!™: algebra software solves algebra homework problems with step-by-step help!

   

Question 180718: The book cost of Hiro’s biology book was $13.00 more than the cost of his history book. The cost of his English was $27.00 less than the cost of his history book.
how do I know what is the cost of each book if I don't have at least one price for one?
Answer by user_dude2008(1825) About Me  (Show Source):
You can put this solution on YOUR website!
Equation #1:
"The book cost of Hiro’s biology book was $13.00 more than the cost of his history book" ----> b=h%2B13


Equation #2:
"The cost of his English was $27.00 less than the cost of his history book" ---> e=h-27


You have 3 variables but only 2 equations. So you'll get infinite number of solutions. You need 3 equations.