Mary runs 3 miles in 25 minutes. At the same rate, how many miles would she run in 20 minutes?

Question

Mary runs  3 miles in 25 minutes. At the same rate, how many miles would she run in 20 minutes?

mathmale · Answer

Hallo! Wie geht's?
suggest you find Mary's speed (rate) first.  It is v = (3 mi) / (25 min).

Remember, distance = rate times time.  Thus, having calculated the rate, just multiply it by 20 minutes, cancelling out "minutes" as appropriate.

rock_mit182 · Answer

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rock_mit182 · Answer

is it right ?

rock_mit182 · Answer

PLease i need to answer the last one right ! and the time is running, actually

rock_mit182 · Answer

I Just need to verify, am I right ?

rock_mit182 · Answer

x = 2,4 miles ?

doc.brown · Answer

You can also think of it as a conversion.
You are converting 20min to miles using a rate.
$$20min\times\frac{3mi}{25min}$$$$20\cancel{min}\times\frac{3mi}{25\cancel{min}}$$$$\frac{20\times 3mi}{25}$$$$=2.4mi$$

rock_mit182 · Answer

OK thanks bro I was just checking

mathmale · Answer

Es tut mir Leid, dass ich so langsam bin.  Du hast jawohl Recht.

rock_mit182 · Answer

Nein, ist ok bruder, dankeschön !

rock_mit182 · Answer

@mathmale I appreciate your help, thumbs up

mathmale · Answer

Bis bald!