document.write( "Question 857975: Asif purchased a car for Rs 360000.The amount is payable in forty monthly installments which are in arithmetic progression. After paying 30 installments one third of the amount would remain unpaid.The amount which Asif would be required to pay as the 35th installment is:
\n" ); document.write( "(a) Rs. 11600
\n" ); document.write( "(b) Rs. 11700
\n" ); document.write( "(c) Rs. 11900
\n" ); document.write( "(d) Rs. 11800
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Algebra.Com's Answer #516964 by richwmiller(17219)\"\" \"About 
You can put this solution on YOUR website!
S = ½(2a + (n-1)d)n
\n" ); document.write( "360000=½(2a + 39d)40,
\n" ); document.write( "240000=½(2a + 29d)30
\n" ); document.write( "a1 = 5100, d = 200
\n" ); document.write( "A35 = 5100 + 34*200
\n" ); document.write( "A35 = 11900\r
\n" ); document.write( "\n" ); document.write( "(c) Rs. 11900
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