# Fill in the blank

(i) R

Amount (A) = P (1 + R/100)n [Where, A = Amount with compound interest

P = Present value

R = Annual interest rate

n = Time in years]

(ii) Compound interest

Amount (A) = P (1 + R/100)n

And Compound interest = P (1 + R/100)n - P

(iii) Rs.

Rate decreases.

Value = P (1 - R/100)n

Present value of machine = Rs.P

Interest rate = R% per annum

Time, n = 2

Value = Rs.

(iv)

Present population of a town = P

Increases rate = R% per annum

Time, n = 5 years

Population = P (1 + R/100)n [Where,

P = Present value

R = Annual interest rate

n = Time in years]

Population after 5 years =

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