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If 64 amount to 83.20 in 2 years what will 86 amounts to in 4 years at the same rate percent per annum(यदि 64 , 2 वर्षो में 83 .20 हो जाता है तो उसी बियाज की दर से 86 4 वर्षो में कितना होगा?)A. 1.325B. 135.6C. 137.6D. None of these |
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Answer» (c ) Let the rate of interest =R% `Rightarrow` According to question `Rightarrow` Interest in 2yrs=83.20-64=19.20 `Rightarrow R%=(S.Ixx100)/(PxxT)` `Rightarrow R%=(19.20xx100)/(64xx2)` `Rightarrow R%=(30)/(2)=15%` Therefore,Amount of 86 will be in four years by 15% of interest (अतः 86 रूपए की राशि 4 वर्षो में 15 % बियाज दर से होगी) `Rightarrow=S.I=(86xx15xx4)/(100)=516` `Rightarrow="Principal+S.I"`=86+51.6=137.60 |
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