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:When an increase in the price of a commodity lead to…An increase in the demand for butter reduces the…If the price of an item increases by 8% while the…Abdul is faced with a choice between buying a new…In bank reconciliation, when a cash book shows a…