a turtle walked 1/2 mile at the rate of 1/5 mile per hour. How long did it take?

Question

simplified answer

 

Answer 1

This is a D-I-R-T (Distance-Is-Rate-times-Time) problem.   D=RT

 

The problem asks for a time.    T=D/R

 

       T = (1/2 mile) / (1/5 mile per hour)

       T = (1/2)*(5/1) hours             [to divide fractions, invert denominator and multiply]

       T = 5/2 hours

       T = 2 1/2 hours

Answer 2

1. we can use the displacement formula for this, d = r*t

2. 1/2 = (1/5)*t

3. solve for t

4. (5)(1/2) = t

5. 5/2 = t

6. 2 1/2 = t

7. t = 2.5 hours