Respuesta :
A.
Charlie bought 7 pounds of flour for $3.
If $3 is the cost for 7 pounds of flour, the question asks us to find the amount he can pay for 1 pound (i.e. the amount he pays per pound of flour)
This means that:
[tex]1\text{pound of flour=}\frac{3}{7}\text{ \$ per pound}[/tex]Therefore, Charlie pays $0.43 per pound.
Answer: 43 cents per pound
B.
Debra runs 4 miles in 23 minutes.
The question asks how long it will take for her to run 1 mile (or per mile)
So we can break it down this way:
4 miles = 1 mile + 1 mile + 1 mile + 1 mile
23 mins = 23/4 mins + 23/4 mins + 23/4 mins + 23/4 mins
or
We can say that
[tex]\begin{gathered} \frac{23}{4}\text{ minutes per mile} \\ 5.75\text{ minutes per mile} \end{gathered}[/tex]Answer: 5.75 minutes per mile
