Respuesta :
Answer:
She need to put on 6 underpants
Step-by-step explanation:
She has learned from experience that she stays warm about 20 minutes for every undershirt she wears.
Time warmed by 1 undershirt = 20 minutes.
Total time she wants to stay out = 120 minutes
Number of underpants required [tex]=\frac{120}{20}=6\texttt{ underpants}[/tex]
So she need to put on 6 underpants