Question

It difference between compound interest & simple Interest is & 21 with
5 percent
rate in 2 years, find the the principal??​

Answer 1

Answer:

P = 8400 rs

Step-by-step explanation:

CI - SI = 21

$p( { ((1 + (r\div 100)}^{2}) - 1) - (pnr \div 100) = 21$

P{(441-400)/400)-(P/10) = 21

(41P/400)-(P/10)=21

(41P-40P)/400 = 21

P/400= 21

P= 8400rs