Question
Find the rate of interest per annum ? I. The CI
in 12 years is more than the amount. II. The difference between SI and CI in 3 years is Rs.1200 III. An amount double itself at SI in 20 years Directions (86-90) : In each of the following questions, a question is followed by some statements numbered I, II and III. Read all the statements and answer accordingly.Solution
From III : Principal = P, Amount = 2P Interest = 2P – P = P SI =P = P × R × 20/100 
R = 5%
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