Question

Jenna ran 2 7/8 kilometers each day for a week. How far did she run in all? Give in estimate, then find the actual amount. Show your work.

Answer 1

Therefore Jenna ran 20
`(1)/(8)` kilometers in a week.

Explanation:

Jenna ran 2 7/8 kilometers each day for a week. How far did she run in all?

We can simply use proportion to solve this;

But we need to know that 7 days = 1 week

If Jenna ran 2
`(7)/(8)` kilometers each day, we are now going to find how many kilometers she run in a week(7 days)

Let x be the total distance she ran in a week

2
`(7)/(8)` kilometers = 1 day

x = 7 day

Cross-multiply

x = 2
`(7)/(8)` × 7

=
`(23)/(8)` × 7

=
`(161)/(8)`

=20
`(1)/(8)` kilometers

Therefore Jenna ran 20
`(1)/(8)` kilometers in a week.