Question 1192361
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3/4 of the money is invested at 9% and 1/4 at 6%.  The average percentage yield is then<br>
{{{(3/4)(9)+(1/4)(6)=33/4}}}<br>
The total interest on the total amount x was Php 3300:<br>
(33/4)% of x = 3300
(33/400)x = 3300
x = 3300(400/33) = 400*100 = 40000<br>
The total invested was Php 40,000.<br>
ANSWERS:
amount invested at 9% = 3/4 of Php 40,000 = Php 30,000
amount invested at 6% = 1/4 of Php 40,000 = Php 10,000<br>
CHECK: .09(30,000)+.06(10,000) = 2700+600 = 3300<br>