Question

In what time will the simple interest be 2/5 of the principal at 8% per annum?

Answer 1

$\underline{\underline{\maltese\:\:\textbf{\textsf{Question}}}}$In what time will the Simple interest be 2/5 of the principal at 8% per annum ?

$\underline{\underline{\maltese\:\:\textbf{\textsf{Solution}}}}$

• Let Principal = Rs x
• S.I. = rs 2/5 x
• Rate of interest = 8% Per annum

Step-by-step explanation:

$\underline{\underline{\maltese\:\:\textbf{\textsf{Find}}}}$

• Time required = ?

$⟶ \: T \: = \dfrac{S.I \times 100}{P \times R}$

$⟶ \dfrac{ \frac{2X}{5} \times 100 }{ X\times 8} years$

•°• On simplifying the value we got the 5 years.

Answer 2

Given

• Simple Interest = ₹ 2/5 x (x-Principal)
• Rate of Interest = 8 % Per annum

To find

• Time period

Solution

⇾ Let us take Principle as ₹x and then according to the question, the simple interest becomes ₹ 2/5 x, now we have principal, simple interest, rate of interest, we can find the time period formula.

➛ SI = PTR/100

➛ T = SI×100/P×R

➛ T = 2x/5×100/x×8

➛ T = 200x/5×1/8x

➛ T = 5

∴ The required time period is 5 years

Learn more

• SI = PTR/100
• R = 100×SI/P×T
• T = 100×SI/P×R
• P = 100A/100+RT

⇾ SI - simple interest

⇾ R - rate of interest

⇾ T - time period

⇾ P - principal