Problema Solution
A bookstore placed two orders with a publisher. The first order was for 12 copies of a history text and 4 copies of a geography text, for a total cost of $1060. The second order was for 6 copies of the history text and 4 copies of the geography text for a total cost was $640.
What is the cost of one copy of the history text?
What is the cost of one copy of the geography text?
Answer provided by our tutors
history $70
geog $55
12x + 4y = 1060
6x + 4y = 640
solvign we get x = 70, y = 55