JAMB - Economics (1985 - No. 9)
If in the short-run commodity X and commodity Y are supplied jointly, which of the following is correct?
An increase in demand for X will increase the supply of Y
An increase in demand for X will shift the supply of Y
An increase in demand for Y will raise the price of X
An increase in demand for X will cause less of Y to be produced
A probable tax on Y will cause more of X to be supplied