Question

at simple interest a sum become 6/5 of itself in 2 year 6 month the rate of interest is
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Answer 1

Step-by-step explanation:

+1

vote

answered May 11 by RajeshKumar (50.7k points)

selected May 12 by Subnam01

(c) 8%

Because,

Let the required sum be ₹ x

Rate of interest = r %

Time = 2½ years = 5/2 years

Amount = (6/5) × sum

Amount = principal + SI

(6/5) × x = x + [(P × R × T)/100]

= (6/5) x = x + [(x × r × 5)/ (100 × 2)]

= (6/5) = (1 + (r/40))

= r = (40 × (1/5))

= r = 8%

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