Question

In a Fundraiser, Mrs.Smith pledges $1 for each miles walked. If Sam walks 20 miles, how much will Mrs. Smith donate?

Answer 1

Answer:

The constant proportionality is $1 because no matter what, Mrs. smith will donate $1 for each mile. So if Sam were to only walk 1 mile, mrs. smith would donate $1.

Answer 2

Answer:

1 mile=$1

20 miles=?

1×20/1

=$20