document.write( "Question 193991: I need to your help please solve these problems\r
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document.write( "1)A total of Rs 14000 invested for a year , part at 5% and the rest at 6.5% . If Rs 760 is the total interest, how much is invested at 5%.\r
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document.write( "2)Mr javed invested a total of Rs 10,000 in three different accouts , the accounts paid simple interest at an annual rate of 8%, 9%,7.5% respectively. Total interest earned for the year was Rs 845 . The amount in the 9% account was the twice the amount invested in the 7.5% account. How much did Mr.Javed invest in each account.
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Algebra.Com's Answer #145735 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! 1)A total of Rs 14000 invested for a year , part at 5% and the rest at 6.5% . If Rs 760 is the total interest, how much is invested at 5%. \n" ); document.write( "--------- \n" ); document.write( "Interest Equation: \n" ); document.write( "0.065x + 0.5(14000-x) = 760 \n" ); document.write( "65E + 50*14000 - 50x = 760000 \n" ); document.write( "15x = 6000 \n" ); document.write( "x = 4000 (amt invested at 6.5%) \n" ); document.write( "14000-x = 10000 (amt. invested at 5%) \n" ); document.write( "---------------------------------------------- \n" ); document.write( " \n" ); document.write( "2)Mr javed invested a total of Rs 10,000 in three different accouts , the accounts paid simple interest at an annual rate of 8%, 9%,7.5% respectively. Total interest earned for the year was Rs 845 . The amount in the 9% account was the twice the amount invested in the 7.5% account. How much did Mr.Javed invest in each account. \n" ); document.write( "Equations: \n" ); document.write( "Quantity Eq: E + N + S = 10000 \n" ); document.write( "Interest Eq: 0.08x + 0.09N + 0.075S = 845 \n" ); document.write( "Quatity Eq: N = 2S \n" ); document.write( "------------------------------------------- \n" ); document.write( "Rearrange: \n" ); document.write( "E + N + S = 10000 \n" ); document.write( "8E+9N +7.5S=84500 \n" ); document.write( "0 + N - 2S = 0 \n" ); document.write( "---------------------- \n" ); document.write( "Solve this by any method you know to get: \n" ); document.write( "E = 1000 \n" ); document.write( "N = 6000 \n" ); document.write( "S = 3000 \n" ); document.write( "============ \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " \n" ); document.write( " |