Question

Teresa runs 7 miles in 80 minutes. At the same rate, how many miles would she run in 64 minutes?

Answer 1

Answer:

$\boxed {\tt 5.6 \ miles}$

Step-by-step explanation:

Let's set up a proportion using the following setup:

$\frac{miles}{minutes}= \frac{miles}{minutes}$

We know Teresa can run 7 miles in 80 minutes.

$\frac{7 \ miles}{80 \ minutes}=\frac{miles}{minutes}$

We don't know how many miles she can run in 64 minutes. Therefore, she can run x miles in 64 minutes.

$\frac{7 \ miles}{80 \ minutes}=\frac{x \ miles}{64 \ minutes}$

$\frac{7}{80} =\frac{x}{64}$

We want to solve for x ( miles in 64 minutes). We must isolate x on one side of the proportion. x is being divided by 64 and the inverse of division is multiplication. Multiply both sides of the equation by 64.

$64*\frac{7}{80} =\frac{x}{64}*64$

$64*\frac{7}{80} =x$

$64*0.0875=x$

$5.6=x$

x= 5.6 miles

Teresa can run 5.6 miles in 64 minutes.

Answer 2

Answer:

She would run about 5.8 miles in 64 min.

Step-by-step explanation:

Let m= miles per minute

7=80m divide 80 on both sides.

0.0875=m Round

0.09 miles per minute

0.09 x 64= 5.76 round or leave it like that

5.8