SOLUTION: a man has P18,000 which he invest partly at simple interest of 12 1/2% and the rest at 8 1/2% per annum. if his total annual income for this investment is P 1,770 how much was inv

Question 358969: a man has P18,000 which he invest partly at simple interest of 12 1/2% and the rest at 8 1/2% per annum. if his total annual income for this investment is P 1,770 how much was invested at each rate?

Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
a man has P18,000 which he invest partly at simple interest of 12 1/2% and the rest at 8 1/2% per annum. if his total annual income for this investment is P 1,770 how much was invested at each rate?
...
$ x @ 12.5 %
18000-x @ 8.5%
total interest = 1770
...
12.5x+8.5(18000-x)=1770*100
12.5x+153000-8.5x=177000
4x=24000
/4
x= 6000 @ 12.5 %
$12000 @ 8.5%
...
m.ananth@hotmail.ca
RELATED QUESTIONS
A man has Php 45,000 which he invests partly at a simple interest of 5% and the rest at 3 (answered by mananth)

A man invest $2000 at 5% per annum simple interest in order to pay his son school fees.He (answered by josmiceli)

Please help not sure how to go about answering this problem, here goes: A business man... (answered by rothauserc,ankor@dixie-net.com)

a man has 100,000 part of which he invest at 12% interest and the rest at 18%. He... (answered by stanbon)

a sum of $2800 is invested, partly at 5% and partly at 4%. if the total interest is $1280 (answered by ikleyn)

dr e man invested $10,000, part at 8 1/2% per annum and the rest at 6 3/4% per annum in... (answered by greenestamps)

Mr. Flores invested Php 25,000.00 of his bonus at 16% per annum. He found another... (answered by Theo)

Paul and Donna Petrie invested $34,000, part at 2% simple interest and the rest 7% at... (answered by josgarithmetic)

A man invested $6,000, part of it at 5% simple interest and the rest at 7% simple... (answered by Earlsdon)