Answer:
He should use [tex]\frac{3}{16}[/tex] cups of chili powder.
Step-by-step explanation:
Given,
The total quantity of chili powder = [tex]\frac{3}{8}[/tex] cups,
Also, only half of the chilli powder is used,
So, the used quantity of chilli powder = [tex]\frac{1}{2}\times \frac{3}{8}[/tex]
[tex]=\frac{3}{16}[/tex] ( Multiplication of fractions ),
Hence, he should use [tex]\frac{3}{16}[/tex] cup of chili powder.