SOLUTION: Mr. Okazaki invested an amount of money in two separate finance firms at the ratio of 3:5. His profits was calculated on 8% and 10% rate simple interest respectively. If after a ye

Question 1151940: Mr. Okazaki invested an amount of money in two separate finance firms at the ratio of 3:5. His profits was calculated on 8% and 10% rate simple interest respectively. If after a year, he received a sum of ¥92,000 as total interest, calculate, correct to the nearest whole number, the total amount invested.

Answer by ikleyn(52754) (Show Source): You can put this solution on YOUR website!
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The investments values are ¥3x and ¥5x.


The total annual interest is the sum of partial interests


    0.08*(3x) + 0.10*(5x) = 92000.


Simplify and solve for x.


When you find x from this equation, calculate 3x and 5x to get the answer.

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