RRB ALP 2013 Ques 70
Question: In what time a sum will double itself at 20% per annum rate of interest?
Options:
A) 2 years
B) 3 years
C) 4 years
D) 5 years
Show Answer
Answer:
Correct Answer: D
Solution:
- Let, principal be $ Rs.x $ then amount will be $ 2x; $ then S.I. $ =2x-x=Rs.x $ Time $ =\frac{x\times 100}{x\times 20}=5years $ .
BETA
