principle = 3000 time = 3 rate = ? interet =? amount = 3450
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Answer:SI=450, R=5%
Step-by-step explanation:SI=A-P
SI=3450-3000
SI=450
SI=P*R*T/100
R=SI*100/P*1/T
R=450*100/3000*1/3
R=5%
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