document.write( "Question 1043218: Ms kaushik invested rs 30000 in total ,part of it at 5% and rest at 8% simple interest. The total interest earned on the investment was rs2100. How much she invested at each rate \n" ); document.write( "
Algebra.Com's Answer #658341 by addingup(3677)![]() ![]() You can put this solution on YOUR website! Let the amount invested at 5% be x. Then, the amount invested at 8% will be 30000-x. Do you agree? \n" ); document.write( "Now let's let up the equation: \n" ); document.write( "0.05x+0.08(30000-x) = 2100 \n" ); document.write( "0.05x+2400-0.08x = 2100 \n" ); document.write( "-0.03x = -300 Divide both sides by 0.03, and remember -/- = + \n" ); document.write( "x = 10000 this is the amount invested at 5% \n" ); document.write( "And the amount at 8%: \n" ); document.write( "30000-10000 = 20000 is the amount invested at 8% \n" ); document.write( ": \n" ); document.write( "John \n" ); document.write( " |