# Algebra

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Another bank offers a different savings rate. If an account with \$400 earns interest of \$6, how much interest is earned by an account with \$1800?

• Algebra -

Just use a simple ratio equation

x/6 = 1800/400
x = 27

or

rate for the account = 6/400 = .015

so for the \$1800 , interest = .015(1800) = 27

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