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divide rupees 7053 into 3 parts so that the amount after 2 3 4 years respectively may be equal the rate of interest being 4% per annum. |
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Answer» LET the three parts be x,y and z. Then, x+ 100 x×2×5 =y+ 100 y×3×5 =z+ 100 z×4×5
⇒x+ 10 x =y+ 20 3y =z+ 5 z
10 11x = 20 23y = 5 6z =k(say) ∴x= 11 10k ,y= 23 20k ,z= 6 5k
Given, x+y+z=2379 ⇒ 11 10k + 23 20k + 6 5k =2379 ⇒ 1518 1380k+1320k+1265k =2379 ⇒3965k=2379×1518 ⇒k= 3965 2379×1518
11×5 10×3×1518 = Rs. 828 |
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