Answer :
We know that the recipe calls for 1 1/4 c of chocolate chips.
If we have to triple the recipe, it means we have to multiply the given amount of chocolate chips by 3.
[tex]1\frac{1}{4}\cdot3[/tex]First, we should transform the mixed number into a fraction.
[tex]\frac{1\cdot4+1}{4}\cdot3=\frac{5}{4}\cdot3=\frac{15}{4}[/tex]Then, we divide to express the fraction as a mixed fraction.
[tex]\frac{15}{4}=3.75=3\frac{3}{4}[/tex]