If the compound interest on a sum for 2 years at 12 `(1)/(2)` %p.a is Rs. 1020, then find the SI on the same sum at the same rate for the same period of time.

C.I = A – P 1020 = P[1+R/100]n – P 1020 = P (1+ 25/200)^2- P 1020 = (9/8)^2 P – P 1020 = 81/64 P-P 1020 = 17/64 P P = (1020 ×64)/17 = 3840 रु Now, SI =((P×R×T)/100) SI = ( (3840 25×2)/(100 × 2)) = Rs. 960

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