SOLUTION: A man loans ₱ 4,000 at one interest rate and ₱ 5,000 at 1% greater rate. Find the rate for each loan if the total interest is ₱ 500.

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Question 789849: A man loans ₱ 4,000 at one interest rate and ₱ 5,000 at 1% greater rate. Find the rate for each loan if the total interest is ₱ 500.
Answer by nilan(17) About Me  (Show Source):
You can put this solution on YOUR website!
let the first interest is x
then the second one will be x+1
so the total interest is 4000x%2F100+%2B+5000%28x%2B1%29%2F100+=+40x+%2B+50%28x%2B1%29+=+90x%2B50
so 90x+%2B+50+=+500
then 90x+=+500-50
90x+=+450
x+=+450%2F90
+x+=+5+