RRB NTPC CBT 2 Level 6 Exam 9 May 2022 Shift 2

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Question : 26 of 120
 
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The amount payable on maturity after 512 years on a sum of Rs. 4,750, when invested at a certain rate per cent of simple interest per annum, was Rs. 6,840. What was the per annum per cent rate of simple interest paid?
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