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kranthy kumar Dandre

· started a discussion

· 1 Months ago

format (Question: 108019.0 )

we are not getting the solution in proper format.

Question:

At what rate will a sum increase by 25% in 2 years at S.I.?

Options:
A) \(12\cfrac{1}{2}\)%
B) 12%
C) \(10\cfrac{1}{2}\)%
D) 10%
Solution:
Ans: (a)

Let the Principal amount = \(\unicode{x20B9} \)100

After 2 years, amount = \(\unicode{x20B9} \)125

Time = 2 years

Let the rate be r%.

Amount = \(P+\cfrac{Prt}{100}\)

125 = 100 + \(\cfrac{100\times r \times2}{100}\)

r = 12.5%

Knowledge Expert

· commented

· 1 Months ago

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