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Reshma repays her total loan of …

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Reshma repays her total loan of ₹1,75,000 by paying every month starting with the first installment of ₹1500. If she increases the installment by ₹175 every month, what amount will be paid by her in the 21st instalment? What amount of loan does she still have to pay after the 21st instalment
  • 1 answers

Anusree Unnikrishnan 6 years, 9 months ago

Sn=1,75,000
an=1500. d=175
Amount paid in 21st installment= a21
a21=1500+20(175). =1500+3500. = ₹ 5000
Total amount paid till 21st installment = a21
S21= 21/2 [2(1500)+20(175)]
= 21/2 [3000+5000]
= 21/2 (8000). = 21×4000. =₹84000
Amount of loan to be paid after the 21st installment = 1,75,000-84,000
= ₹ 91,000


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