A guy invests 7000. Made 600.00 interest. Invested at 8 & 9% interest, how much was invested at the 8%? Can anyone assist please?? I just need a formula

Question

A guy invests 7000.  Made 600.00 interest. Invested at 8 & 9% interest, how much was invested at the 8%? Can anyone assist please?? I just need a formula

anonymous · Answer

yeah just tell me the formula for simple interest

anonymous · Answer

Can you rephrase your question, @rgfisher228? Thanks!

anonymous · Answer

do you know the answer? is it 3000 ?

parthkohli · Answer

$\Large \color{purple}{S.I. = {Principal * Rate * Time \over 100 } }$

parthkohli · Answer

For the record, I'm not telling the answer. Just the formula. OS is about learning, not testing. @sheg

anonymous · Answer

arey han mere chhote bhai jisne ye puchha tha wo turant hi logg off kar gaya sawal karne ke bad

anonymous · Answer

ok tell me one thing parth how you can make learn anyone without knowing how much he/she knows @parthkohli. After knowing their level only you can pick where the link is missing right then only you can help and for the record i will tell you when i will find you doing so

hero · Answer

x + y = 7000
.08x + .09y = 600

Solve the system

hero · Answer

x = 3000
y = 4000

hero · Answer

Therefore, 3000 was invested @ 8%