Word Problem

Question

use d=rt to find how Joe drove in 15 minutes at a rate of 48 mi/hr

Answer 1

Hi, King.

 

d = rt where t is hours

since 15 minutes is 1/4 of an hour:

 

d = 1/4(48) = 12 miles

 

Answer 2

Distance = rate * time

rate = 48 ^mi/_hr

time = ¹/₄ hour (because 15 minutes is a quarter of an hour)

 

D = 48 ^mi/_hr * ¹/₄ hour

So you're left with:

D = ⁴⁸/₄ miles

Reduce that fraction and you'll have your answer.