RRB Technician 2013 Ques 105
Question: Shyam invests an amount of Rs.5690 at the rate of 5% per annum for 3 yr. What approximate amount of compound interest will be obtain at the end of 3 yr?
Options:
A) Rs. 854
B) Rs. 799
C) Rs. 843
D) Rs. 897
Show Answer
Answer:
Correct Answer: D
Solution:
- Compound Interest =56901 $ [ {{( 1+\frac{5}{100} )}^{3}}-1 ] $ $ =5690[ {{( \frac{105}{100} )}^{3}}-1 ] $ $ =5690\times [ ( \frac{21}{20}\times \frac{21}{20}\times \frac{21}{20} )-1 ]=5690\times ( \frac{9261}{8000}-1 ) $ $ =\frac{5690\times 1261}{800}=Rs.,896.88\approx Rs.897 $
BETA
