word math problem

Question

Ann is putting money into a savings account. She starts with 550 in the savings account, and each week she adds 60 . Let s represent the total amount of money in the savings account (in dollars), and let w represent the number of weeks Ann has been adding money. Write an equation relating s to w . Then use this equation to find the total amount of money in the savings account after11 weeks.

Answer 1

Hi Mohammad, the equation would look like this:

 

s = 550 + 60 * (w - 1)

 

550 is the initial deposit. 60 * (w - 1) is the amount added in w weeks. Week one would represent the initial deposit, that is why one is subtracted from w.

 

Total amount after 11 weeks.

 

replace 11 with w:

 

s = 550 + 60 * (11 - 1)

 

s = 550 + 60 * 10

 

s = 550 + 600

 

s = 1150

 

Ann would have $1150 after 11 weeks.

 

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