Ask
your own question, for FREE!
Mathematics
17 Online
OpenStudy (anonymous):
Sarah invested $10,000, part at 5% and the remainder at 7%. The total annual interest she received was $640. How much did she invest at each rate?
Still Need Help?
Join the QuestionCove community and study together with friends!
OpenStudy (anonymous):
say she invested part of 10000( i will call this as X) at 5% and 10000-X is at 7% now X* 5% + (10000 -X) *7% =640
OpenStudy (anonymous):
solve for X and you will find out the other part as well
OpenStudy (dumbcow):
x+y = 10,000 .05x + .07y = 640 multiply top by -.05 -.05x -.05y = -500 .05x +.07y = 640 _____________________ 0 +.02y = 140 y = 7000 x= 3000
Can't find your answer?
Make a FREE account and ask your own questions, OR help others and earn volunteer hours!
Join our real-time social learning platform and learn together with your friends!
Join our real-time social learning platform and learn together with your friends!
Latest Questions
thereneelg:
Okay....I'm doing a group solo for choir. Auditions are Tuesday (?), Any tips on
Arizona:
my Rolling stone airpods won't connect and I got them about a year ago is there t
Arizona:
can someone check out my essay i'm doing in my senior English class about the McD
IcedShots:
I was wondering, is there anybody on here around my age? Im turning 15 on December 1 ud83dude0a.
stxandrew1214:
I lwk like a junior need help to talk with her and get to know her but I think sh
thatonenerd:
Use Hvap of water = 40.7 kJ/mol, c of water = 4.184 J/g.u00b0C, and molar mass of HO = 18.
letrasbonitasz:
Typography plays an important role in digital communication. Different font styles can make social media profiles, usernames, messages, and creative designs
Bounty:
tested love: im so over love it acquires patience i don't have trials an tribulations yet my souls the only one taken i give 90 you give 10 you say that you
SaltySuga:
is it possible to tell how deep a cut is by an open wound? like would i be able t
thereneelg:
Okay....I'm doing a group solo for choir. Auditions are Tuesday (?), Any tips on
3 hours ago
0 Replies
0 Medals
Arizona:
my Rolling stone airpods won't connect and I got them about a year ago is there t
10 hours ago
3 Replies
0 Medals
Arizona:
can someone check out my essay i'm doing in my senior English class about the McD
1 day ago
1 Reply
0 Medals
IcedShots:
I was wondering, is there anybody on here around my age? Im turning 15 on December 1 ud83dude0a.
10 hours ago
3 Replies
0 Medals
stxandrew1214:
I lwk like a junior need help to talk with her and get to know her but I think sh
1 day ago
19 Replies
3 Medals
thatonenerd:
Use Hvap of water = 40.7 kJ/mol, c of water = 4.184 J/g.u00b0C, and molar mass of HO = 18.
2 days ago
5 Replies
0 Medals
letrasbonitasz:
Typography plays an important role in digital communication. Different font styles can make social media profiles, usernames, messages, and creative designs
4 days ago
3 Replies
1 Medal
Bounty:
tested love: im so over love it acquires patience i don't have trials an tribulations yet my souls the only one taken i give 90 you give 10 you say that you
2 days ago
7 Replies
2 Medals
SaltySuga:
is it possible to tell how deep a cut is by an open wound? like would i be able t
4 days ago
5 Replies
1 Medal