यदि ब्याज की दर 15% की बजाय 10%हो तो ब्याज 1700 कम होता है। मूलधन क्या होगा?
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Let P be the principal and time be t =1 year
Interest at 15% =P(15/100)×1=0.15P
Interest at 10%=P(10/100)×1=0.1P
0.15P-0.1P=1700
0.05P =1700
P=1700/0.05=34000
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