Question

if rupees 500 becomes rupees 700 in 2 years find the rate of interest.​

Answer 1

Step-by-step explanation:

SI = Amount - Principal = 700 - 500 = ₹200

$\star$ $\textbf{\underline{\underline{Formula}}}$

$\implies$$R=\Large\frac{SI×100}{P×T}$

$\implies$$R=\Large\frac{200×100}{500×2}$

$\implies$$\boxed{Rate=20\:Percent}$

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Answer 2

Answer:

Rate of Interest = 70%

Step-by-step explanation:

PRT/100 = 700

500 × r × 2/100 = 700

500 × r × 2 = 700 × 100

500 × r × 2 = 70,000

R × 2 = 70,000/500

R × 2 = 140

R = 140/2

R = 70%

Principal = 500

Rate        = 70%

Time       = 2 Years

Simple Interest ( S.I) = 700

CHECKING

Simple Interest (S.I) = PRT/100

                                  = 500 × 70 × 2/100

                                  = 70,000/100

                                  = 700

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