Question

Mohammed and luigi were printing calendars. Mohammed used 3 1/2 ink cartridges while Luigi used 1 3/4 ink cartridges. How many more ink cartridges did Mohammed use than Luigi

Answer 1

Step-by-step explanation:

Mohammed used 3 1/2 ink cartridges = $\dfrac{7}{2}$

Luigi used 1 3/4 ink cartridges = $\dfrac{7}{3}$

It means that Mohammed used more ink cartridges than Luigi. The more amount is calculated as follows :

$\dfrac{7}{2}-\dfrac{7}{3}=\dfrac{7\times3-7\times 2}{6}\\\\=\dfrac{21-14}{6}\\\\=\dfrac{7}{6}$

So, $\dfrac{7}{6}$ more ink cartridges Mohammed used than Luigi.