On certain principal the simple interest and compound interest for 2 years at the same
rate of interest are Rs. 400 and Rs. 420 respectively. Find the principal.
1) Rs. 4000 2) Rs. 3500
3) Rs. 2000
4) Rs. 1000
rate of interest are Rs. 400 and Rs. 420 respectively. Find the principal.
1) Rs. 4000 2) Rs. 3500
3) Rs. 2000
4) Rs. 1000
Answers & Comments
Answer:
2,000 Rs
Step-by-step explanation:
CI = 420 Rs
SI = 400 Rs
SI for one year = 400/2 = 200 Rs
CI - SI = 420 - 400 = 20 Rs
So,
% = 20/200 × 100 = 10 %
10% of Principal = 200 Rs
Therefore,
Principal = 2,000 Rs