Answer:
let's call the entire length of the foot race we are looking for: d
for distance.
We can then rewrite this problem as:
One-third of d
is 5 miles. What is d
.
When dealing with fractions in this way the word "of" means to multiply. So we can write this problem in algebraic form as:
1
3
×
d
=
5
We can multiply each side of the equation by
3 to solve for d
while keeping the equation balanced:
3
×
1
3
×
d
=
3
×
5
3
3
×
d
=
15 1
×
d
=
15
d
=
15
The length of the race is 15 miles.
Step-by-step explanation:
hope this helps
