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Mahesh Sandeboina

· started a discussion

· 1 Months ago

ANSWER (Question: 249209.0 )

let b's salary is 125 then a's become (125+125(91/125))=216
then 216(1-x/100)^3 =125(1-10/100)^3 then x is the required percentage

Question:
A’s salary is  \(\cfrac{91}{125}\) times more than the salary of B. B spends his salary at 10% per annum. At what rate should A spend his salary so that after 3 years they are left with the same amount while they spend on compound interest basis? 
Options:
A) 20%
B) 25%
C) \(33\cfrac{1}{3}\%\)
D) \(33\cfrac{1}{2}\%\)
Solution:
Ans: (b)


Suryanarayana sarma

· commented

· 1 Months ago

why 1-x? if ci formula is (1+x/100)?
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