a part of 1500 was lent at 10% per annum and the rest at 7% per annum simple interest. the total interest earned in three years was 396.
the sum lent at 10% was
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Step-by-step explanation:
Let, p be lent at 10% per annum
and (1500-p) at 7% per annum
Now,
+ = 369
=> 30p+31500-21p = 39600
=> 9p = 39600- 31500
=> 9p = 8100
=> p = 8100/9
=> p = 900
Therefore, the sum lent at 10% was rs. 900
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