Bundle** Oranges/Week ** Total Utility

A 0 50
B 1 80
C 2 100
D 3 115
E 4 125
F 5 133
G 6 139
H 7 144
I 8 146
J 9 147
K 10 147
L 11 147
M 12 147
N 20 147

From the above table draw TU curve and MU curve find MU when using the fourth
oranges, then derive the demand line

You lost me at the third orange. Try the Prokoviev opera.

http://www.youtube.com/watch?v=obTZBHAuOqY&feature=related

H.W. = homework?
M. U. = marginal utility?

If this is how economics is taught nowdays, no wonder the world is in such a mess.