Question

rate of interest 3.5% time is 2 years​

Answer 1

Answer:

Given R = 3.5%, T = 2 years

Amount = Rs 535

Recall A = P(1+TR/100)

⇒ 535 = P[1+ (2× 3.5)/100]

⇒ 535 = P[107/100]

⇒ P = 535 × (100/107) = 500

Hence principal P = Rs 500

Simple interest, I = (PTR)/100

= (500 × 2 × 3.5)/100

= (5 × 2 × 3.5) = 35

Hence interest = Rs 35

Answer 2

Answer:

Let the principal amount = Rs.P

Amount = Rs.535

Rate of interest (R) = 3.5%

Time period (T) = 2 years

\small \text{We have, simple interest }= \frac{PTR}{10}

Amount = Principal + Interest

\small \\ \Rightarrow 535= P+\left (\frac{P\times2\times3.5}{100} \right )\\\\ \Rightarrow 535=\left (\frac{100P+7P}{100} \right )\\\\ \Rightarrow 535\times100=107P\\\\ \Rightarrow P=\frac{535\times100}{107}\\\\ \Rightarrow P=Rs.500  

∴Principal amount (P) =Rs. 500

Now,

Simple interest = Amount - Principal = 535 - 500 = Rs.35