Someone help please :(

Mathematics

1 answer:

Hunter-Best [27]3 years ago

4 0

Answer:

Answers in step-by-step.

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.

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Leona [35]

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