Question

Renee recently traveled with her family in their mini van. She sat in the backseat for the first half of the trip. Then she rode in the front seat for the next fourth of the trip, and then in the backseat for the last fourth. If the entire trip was 7 hours, how long did she ride in the front seat?

Answer 1

Answer:

1.75 hours

Step-by-step explanation:

7÷4=1.75

Answer 2

Answer:

1.75 hours. (One hour and 45 minutes)

Step-by-step explanation:

Fractions and Proportions

A porportion, division or ratio is computed as the fraction a/b. In some cases, we want to compare parts or subsets of elements with the whole set. If n is the total number of elements of the set, and a,b,c,.. are subsets, then a/n, b/n, c/n express the portions of n each subset has.

We know Renee rode in the frontseat for one fourth of the trip. It's 1/4 proportion.  

If we know the trip was 7 hours long, then Renee rode in the frontseat a total of

$\displaystyle 7*\frac{1}{4}=\frac{7}{4}=1.75\ hours$

It's one hour and 45 minutes