Question

Someone help please :(

Answer 1

Answers in step-by-step.

Explanation:

We are going to make Sarah the variable "s."

Using the given information, the following equation is derived to calculate Sarah's distance.

• S=2n-5

And the following equation will be used to calculate what Sarah collected using "p" for pledged money.

• P=18S

If Sarah collected $450 in pledges, we can use the preceding formula to calculate her distance.

• P=18S
• 450=18S
• 450/18=S
• 25 miles = S

Using Sarah's distance, we can calculate Semir's either the first equation.

• S=2n-5
• 25=2n-5
• 30=2n
• 15=n
• Semir walked 15 miles.

We already found Sarah's distance to be 25 miles.

Now SungSo is making the same amount as Sarah. He collects $450 total, but he got $72 from his grandmother initially, so subtract 72 from 450 to get the amount he collected from walking.

• 450-72=$378

His formula is the same as Sarah's, but we'll use SS for his variable.

• P=18SS
• 378 = 18SS
• 378/18=SS
• 21= SS
• SungSo walked 21 miles.