According to the question,
[(1230 x 2 x R)/100] - [(1130 x 2 x R)/100] = 10

Correct Option: A

According to the question,
[(1230 x 2 x R)/100] - [(1130 x 2 x R)/100] = 10
⇒ (200 x R)/100 = 10
∴ R = 5%

Given, SI₁ - SI₂ = 110,
T₁ = 2 Yr,
T₂ = 1 yr, R₁ = 8%, R₂ = 5%

According to the question,
[(P x 8 x 2)/100] - [(P x 5 x 1)/100] = 110

Correct Option: B

Given, SI₁ - SI₂ = 110,
T₁ = 2 Yr,
T₂ = 1 yr, R₁ = 8%, R₂ = 5%

According to the question,
[(P x 8 x 2)/100] - [(P x 5 x 1)/100] = 110
⇒ 11P/100 = 110
∴ P = ₹ 1000

According to the question
[P x (R + 2) x 4]/100 - [P x R x 4]/100 = 56
⇒ (4PR + 8P - 4PR)/100 = 56

Correct Option: B

According to the question
[P x (R + 2) x 4]/100 - [P x R x 4]/100 = 56
⇒ (4PR + 8P - 4PR)/100 = 56
⇒ 8P/100 = 56
∴ P = (56 x 100)/8 = ₹ 700

SI at 5% = 6P - P = 5P
∴ 5P = (P x 5 x T) /100
⇒ T = 100 yr
Now, for new rate (R),
11P = (P x R x 100)/100

Correct Option: D

SI at 5% = 6P - P = 5P
∴ 5P = (P x 5 x T) /100
⇒ T = 100 yr
Now, for new rate (R),
11P = (P x R x 100)/100
∴ R =11%

Here, n = 2, m =10, T₁ = 6 yr, T₂ = ?
∴ T₂ = [(m - 1) / (n - 1)] x T₁

Correct Option: D

Here, n = 2, m =10, T₁ = 6 yr, T₂ = ?
∴ T₂ = [(m - 1) / (n - 1)] x T₁
= [(10 - 1)/(2 - 1)] x 6
= 54 yr