When a pen and a book is demanded together, the demand is said to be? by Sunday | Aug 1 | Economics WAEC | 0 comments A. composite B. competitive C. joint D. derived Correct Answer: Option C – joint Users Also Read These:A decrease in the demand for a product X resulted in…If the price of an item increases by 8% while the…Let the quantity demanded in units of a particular…In bank reconciliation, when a cash book shows a…If the price of a ball point pen falls from N1.00 to…