Question

Sarah walked 5 miles less than twice the number of miles that Semir walked. They each collected $18 in pledges for every mile they walked. Let n represent the number of miles Semir walked. Write an expression for the number of miles Sarah walked. Let n represent the number of miles Semir walked. Write an expression for the amount of money Sarah collected in pledges. Write an equation to find how many miles Semir walked if Sarah collected $450 in pledges. Solve the equation that you wrote for question 5. How many miles did Sarah walk? SungSo also collected $18 in pledges for every mile he walked. Inaddition, his grandmother gave him a $72 donation. He collected the same amount of money as Sarah did. Write and solve an equation to find the number of miles SungSo walked.

Answer 1

Explanation:

Semir = n

Sarah = 2n - 5

Sarah's expression =. 2n-5

Sarah's equation = 18(2n-5)

Semir's equation = 18(2n-5) = 450

n = 15

Sarah walked 2(15) - 5 which is 25 miles.

SungSo:

18x + 72 = 450

x = 21