Answer:
The Principal amount for 9 % is $ 75,000 And
The Principal amount for 11 % is $ 90,000 .
Step-by-step explanation:
Given as :
The principal amount = $165000
Total interest paid = SI = $16650
The two rate of interest are 9% and 11%
The Time period of loan = 1 year
Let The Principal for 9% = $ x
And The Principal for 11% = $ 165000 - $x
From Simple Interest method
Simple Interest = [tex]\dfrac{\textrm Principal\times \textrm Rate\times \textrm Time}{100}[/tex]
Or, 16650 = [tex]\dfrac{\textrm x\times \textrm 9\times \textrm 1}{100}[/tex] + [tex]\dfrac{\textrm (165000 - x)\times \textrm 11\times \textrm 1}{100}[/tex]
Or, 16650 = [tex]\frac{9 x}{100}[/tex] + [tex]\frac{(165000- x) 11}{100}[/tex]
Or, 16650×100 = 9 x + 1815000 - 11 x
Or, 11 x - 9 x = 1815000 - 1665000
Or , 2 x = 150,000
∴ x = [tex]\frac{150000}{2}[/tex] = $ 75,000
And $ 165000 - $ 75000 = $ 90,000
Hence The Principal amount for 9 % is $ 75,000 And
The Principal amount for 11 % is $ 90,000 . Answer