Question

A certain sum of money amounts to ₹3360 at a rate of R% per annum under simple interest after 5 years, and to ₹3480 at a rate of 15% per annum under simple interest after 3 years. Find the total amount that would be received on the same principal at a rate of (R + 4)% per annum under simple interest after 4 years.

A Rs 4134
B Rs 3760
C Rs 3552
D Rs 4126
E Rs 3680
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