Question

if P =rupees 8000,R=10percent,Amount=rs 12,000 then period T is_______

Answer 1

Answer:

5 years

Step-by-step explanation:

$(\frac{PRT}{100})+P = A\\\\(\frac{8000*10*T}{100} )+8000 = 12,000\\\\\frac{8000*10*T}{100} = 12000-8000 = 4000\\\\80*10*T = 800*T = 4000\\\\T=\frac{4000}{800}=5$

Therefore T = 5 years

Answer 2

Answer:

The time period is $3.3$ years.

Step-by-step explanation:

Given : Principal (P) = Rs. $8000$  

          Total amount (A) = Rs. $12000$

          Rate of interest (R) = $10$%

To find : The time period (t) = ? years

Solution :

• It is given that Principal (P) = Rs. $8000$  

          Total amount (A) = Rs. $12000$

          Rate of interest (R) = $10$%  

• We have to find the time period (t).
• We know the formula for simple interest as,

       S.I. = A-P

             = $12000-8000$

             = Rs. $4000$

• Now, to find rate of interest, use the formula for simple interest as

           S.I. = $\frac{P*R*t}{100}$  

      ∴  $4000 = \frac{12000*10*t}{100}$

      ∴ $4000*100 = 120000*t$

            ∴ $\frac{400000}{120000} = t$

            ∴ $t= 3.3$ years

• ∴ The time period is $3.3$ years.