Question

The difference of simple and compound interest is rupees 4 at 4% for 2years.find the sum:​

Answer 1

Answer:

Principal=2500₹

Step-by-step explanation:

Short Method

Difference= P× r^2/10000

4=P×16/10000

P=2500₹

Answer 2

Answer:

the si = p*r*t/100

then si = p*4*2/100

si =8p/100

now we find amount of ci

amount = p (1+r/100)n

amount = p (1 + 4/100)2

              =p(104/100)2

                = 676p/625

ci = amount - principal

     =676p/625-p

     = 51p/625

      a/q

ci -si =4

 51p/625 - 8p/100 =4

4p/2500 =4

1p/625 = 4

p = 2500

so the principal is 2500

hope this will help you