Bhagwanti inherited Rs 12000.00. She invested part of it as 10% and the rest at 12%. Her annual income from these investements is Rs 1280.00 How much did she invest at each rate?
Let one part is Rs 
Other part is 
One part of investment = 
Other part of investment = 
Total investment = 1280
On cross multiplication, we get
Therefore one part is Rs 8000 and other part is Rs 4000
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