ECON 2500
Spring 2009
Dr.
Tufte
Homework 27
Due: Wednesday, April 1, at the start of class.
If possible, answer questions in the space provided.
This is another area you’re supposed to know. That’s a warning.
1) The prices of butter and margarine are related by these two equations. Solve for
both prices:
8 3
7
7
19
2) Solve the following equations for x, y and z:
16 0
24 0
42 0
A frequently forgotten part of algebra is that – provided that neither side of the equation
equals zero – one equation may be divided by another. This technique will save you
some time with problems we will be doing shortly.
3) If:
12
2
Fill in the blanks:
4) Using your answers from # 1, can you show that:
8
3
7
7
19
5) Explain why in # 2 that:
16
24 1