Question

• The interest on a sum of money at the end of
of 4 years is 4/5 of the sum. Find the rate of
interest per cent.
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Answer 1

Answer:

16%

Step-by-step explanation:

let principal be P

time = 5 year

simple interest = 4/5p

P×R×T/100 = 4/5p

= P×R×5/100 = 4/5p

R = 4/5 × 100/5

= 16%