Fundamentals of Computer Programming - Old Questions
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3. Write a program for the interest charged in installments for following case. A cassette player costs Rs. 2000. A shopkeeper sells it for Rs. 100 down payment and Rs. 100 for 21 more months. What is the monthly interest charged?
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#include<stdio.h>
#include<conio.h>
void main()
{
float c_price, t_price, t_interest, m_interest; //cost price, total price, total interest, monthly interest
c_price=2000;
t_price=100+(100*21); //down payment Rs. 100 and Rs. 100 for 21 installments
t_interest=(t_price - c_price)/c_price*100;
m_interest=t_interest/22; //payment is for 22 months
printf("\\nThe monthly interest charged is %f", m_interest); //result is 0.45% per month
getch();
}