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    				| 1. | Mr Abhishek paid Rs.360 as an interest for 8 months at `18%` p.a. Find the principal value of the loan taken by him. | 
| Answer» Let the principal be P. `R=18%p.a.` `T=8" months"=(8)/(12)"yeaRs. "=(2)/(3)"yeaRs."` `SI=(PTR)/(100)` `360=Pxx(2)/(3)xx(18)/(100)` `P=(360xx3xx100)/(2xx18)=10xx300=Rs.3000` | |