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You open an account at Bertha’s Banking Branch. You put $50 in the bank and your account earns $4 per week in interest. How many weeks will it take for the balance in your account to be $90?
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You open an account at Bertha’s Banking Branch. You put $50 in the bank and your account earns $4 per week in interest. How many weeks will it take for the balance in your account to be $90?

User Sarah Mei
by
8.5k points

1 Answer

7 votes

Answer:

10

Explanation:

50+4x=90

4x=90-50

4x=40

x=40/4

x=10

User Matt Good
by
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