SOLUTION: a person can run 1 3/4 miles in 1 hr.How many hrs. will it take the person to run 3 1/8 miles?

Algebra ->  Rate-of-work-word-problems -> SOLUTION: a person can run 1 3/4 miles in 1 hr.How many hrs. will it take the person to run 3 1/8 miles?       Log On


   

Question 907666: a person can run 1 3/4 miles in 1 hr.How many hrs. will it take the person to run 3 1/8 miles?
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
That rate is walking, NOT running.

Whatever the classification:

%281%263%2F4%29%2F1=%283%261%2F8%29%2Fx, using x for time in hours. Just a proportion, using mixed numbers and whole number. Change mixed numbers into improper fractions!

%287%2F4%29%2F1=%2825%2F8%29%2Fx

7%2F4=25%2F%288x%29

x%287%2F4%29=x%2A25%2F%288x%29

x%287%2F4%29=25%2F8

x=%2825%2F8%29%284%2F7%29

x=25%2F%282%2A7%29

highlight%28x=25%2F14%29
About 1 hour 47 minutes