At what rate percent compounded yearly will Rs. 4000 amount to Rs 4410 in 2 yrs?

A = P[1+R/100]n 4410 = 4000 (1+ R/100)² 4410/4000 = (1+ R/100)² ⇒441/400 = (1+ R/100)² (21/20)² = (1+ R/100)² 21/20 = (1+ R/100) 21/20 - 1 = (R/100)⇒ 1/20= R/100 ∴ R = 5% p.a.

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