SOLUTION: A stockbroker has money in three accounts. The interest rates on the three accounts are 8%,9%, and 10%. If she has twice as much money invested at 9% as she does in 8%, three times
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Question 1060552: A stockbroker has money in three accounts. The interest rates on the three accounts are 8%,9%, and 10%. If she has twice as much money invested at 9% as she does in 8%, three times as much at 10% as she has at 8%, and the total interest for the year is $112, how much is invested at each rate?
JoAnn works in a publicity office at the state university. She is paid $11.50 an hour for the first 35 hours she works each week and $17.25 an hour for every hour after that. If she makes $471.50 one week, how many hours did she work?
The difference of x and 12 is 13.
Please help me. Im so confused :(
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
For simple interest, and also
for 1 year:
where is the amount invested
at rate
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---------------------
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$200 is invested at 8%
$400 is invested at 9%
$600 is invested at 10%
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Let = the number of hours she worked
for the week
She worked 39 hrs for the week
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check:
OK
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