SOLUTION: Santos invests $7700 in two different accounts. The first account paid 11 %, the second account paid 2 % in interest. At the end of the first year he had earned $424 in interest. H
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Question 1129563: Santos invests $7700 in two different accounts. The first account paid 11 %, the second account paid 2 % in interest. At the end of the first year he had earned $424 in interest. How much was in each account?
At 11%-
At 2%-
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!
Santos invests $ in two different accounts.
let's say is one account and is other account
The first account paid %, =
the second account paid % in interest=
At the end of the first year he had earned $ in interest.
........eq.1->both sides multiply by
......eq.2->both sides multiply by
--------------------------------------------------
........eq.1
......eq.2
----------------------------------------------------subtract
then,
...plug in
How much was in each account?
At %- was -> got in interest
At %- was -> got in interest
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