SOLUTION: 92.) Investing her bonus. Donna invested her $33,000 bonus and received a total of $970 in interest after one year. If part of the money returned 4% and the reminder 2.25% then h
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-> SOLUTION: 92.) Investing her bonus. Donna invested her $33,000 bonus and received a total of $970 in interest after one year. If part of the money returned 4% and the reminder 2.25% then h
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Question 200700: 92.) Investing her bonus. Donna invested her $33,000 bonus and received a total of $970 in interest after one year. If part of the money returned 4% and the reminder 2.25% then how much did she invest at each rate?
100.)Ticket of Sales. Thickets for a concert were sold to adutls for $3.00 and to students for $2.00. If the total receipts were $824.00 and twice as many adult tickets were sold, then how many of each were sold? Answer by ankor@dixie-net.com(22740) (Show Source):
You can put this solution on YOUR website! Donna invested her $33,000 bonus and received a total of $970 in interest
after one year. If part of the money returned 4% and the reminder 2.25% then
how much did she invest at each rate?
:
Let x amt invested at 4%
then
(33000-x) = amt invested at 2.25%
:
Write an equation using the decimal values for the rates:
.04x + .0225(33000-x) = 970
:
.04x + 742.5 - .0225x = 970
:
.04x - .0225x = 970 - 742.5
:
.0175x = 227.5
x =
x = $13,000 invested at 4%
then
33000 - 13000 = $20,000 invested at 2.25%
:
Check solution;
.04(13000) + .0225(20000) =
520 + 450 =970
:
:
100.)Ticket of Sales. Tickets for a concert were sold to adults for $3.00
and to students for $2.00. If the total receipts were $824.00 and twice as
many adult tickets were sold, then how many of each were sold?
:
3a + 2s = 824
:
"twice as many adult tickets were sold,"
a = 2s
:
Replace a with 2s in the 1st equation, find s
3(2s) + 2s = 824
6s + 2s = 824
8s = 824
s =
s = 103 students
:
You can find the no. of adults
