Anvi is making bookmarker like the one shown in Fig. 2.6. How many bookmarker can she make from a 15 m long ribbon?

142 book marker
Each bookmark length = \(10\tfrac{1}{2}\,\text{cm}=10.5\,\text{cm}\). Ribbon = \(15\,\text{m}=1500\,\text{cm}\). Count = \(\left\lfloor \dfrac{1500}{10.5} \right\rfloor=142\).