Kruti took some loan at 6% per annum simple interest during the first year with an increase of 0.5% for each year. After 4 years she paid Rs. 3375 as interest. How much was the loan ?
A
Rs. 12500
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B
Rs. 33250
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C
Rs. 15800
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D
Cannot be determined
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Solution
The correct option is A Rs. 12500 Suppose the principal is x ⇒x[6100+6.5100+7100+7.5100]=3375 ⇒x100×27=3375 ⇒x=3375×10027=12500