SOLUTION: Mary and Helen invested K9000.00 and K11000.00 respectively. If the interest of K2400.00 was shared between them in the ratio of their investment, find how much each person will re

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: Mary and Helen invested K9000.00 and K11000.00 respectively. If the interest of K2400.00 was shared between them in the ratio of their investment, find how much each person will re      Log On


   

Question 1090904: Mary and Helen invested K9000.00 and K11000.00 respectively. If the interest of K2400.00 was shared between them in the ratio of their investment, find how much each person will receive.
Answer by jorel1380(3719) About Me  (Show Source):
You can put this solution on YOUR website!
The ratio of their investments is 9:11, as stated in the problem. Therefore:
9n+11n=2400; where n is the common multiple of their investments. So:
20n=2400
n=120
Mary receives 9*120, or K1080, and Helen receives 11*1020, or K1320
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