When an increase in the price of a commodity lead to a fall In the demand for another; the demand for the two commodities are said to be? by Sunday | May 4 | Economics NECO | 0 comments A. abnormal B. competitive C. composite D. derived E. joint Correct Answer: Option E – joint Users Also Read These:The demand for a commodity not directly for…If commodity X is a by-product of commodity Y; this…An increase in the supply of a commodity X…An increase in the price of commodity X led to a…The increase in the demand for a commodity may lead…