the simple interest on a sum equals 1/10of itself in 4 years. find the rate of interest?
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Answer:
r=2.5
Step-by-step explanation:
SI=prt/100
=pr×4/100
=pr/25
by question
pr/25=1/10×p
=pr/25=p/10
=r/25=1/10
=by cross multiplication
10r=25
r=2.5%
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