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Roshaun has saved $150 and continues to add $10 each week. Keegan starts with $0 and saves $25 each week. In how many weeks will they have the same amount of money

User Hevar
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1 Answer

4 votes

Answer:

It will take 10 weeks for Roshaun and Keegan to have the same amount of money

Explanation:

The general expression to calculate the amount saved by both Roshaun and Keegan is as follows;

Total amount saved=Initial amount saved+amount saved per week×number of weeks (w)

For Roshaun;

Initial amount saved=$150

Amount saved per week=$10

Number of weeks=w

Replacing in the expression above;

Total amount saved=(150)+(10×w)

Total amount saved by Roshaun after w weeks=(10 w+150)

For Keegan;

Initial amount saved=$0

Amount saved per week=$25

Number of weeks=w

Replacing in the expression above;

Total amount saved=(0)+(25×w)

Total amount saved=(25 w+0)=25 w

Total amount saved by Keegan after w weeks=25 w

To determine the number of weeks it will take for Keegna and Roshaun to have the same amount of money, we equate Roshaun's total savings after w weeks to Keegan's total savings after w weeks and solve:

Total amount saved by Keegan=Total amount saved by Roshaun

25 w=10 w+150

(25 w-10 w)=150

15 w=150

w=150/15

w=10

It will take 10 weeks for Roshaun and Keegan to have the same amount of money

User Tong Shen
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