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khushboo kumari

· started a discussion

· 1 Months ago

q wrong (Question:231706.0)

in hin7/9di given

Question:
A sum of money becomes \(\cfrac{7}{6}\) of itself in 3 years at a certain rate of simple interest. The rate of interest per annum is: 


Options:
A) 5 \(\cfrac{5}{9}\) % 
B) 6 \(\cfrac{5}{9}\) %
C) 18%
D) 25%
Solution:
Ans: (a) Let principal = 6P, 

Hence, Amount = 6P ×  \(\cfrac{7}{6}\) = 7P 

\(\therefore \) SI = 7P - 6P = P 

Time = 3  years 

SI = \(\cfrac{P × R × T}{100}\) 

\(\Rightarrow\) P =  \(\cfrac{6P × R × 3}{100}\)

\(\Rightarrow\) R = \(\cfrac{100}{18} = \cfrac{50}{9} = 5 \cfrac{5}{9} \%\)

Knowledge Expert

· commented

· 1 Months ago

Dear student,
Given question is correct.
Keep learning,
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