Question

A borrows 800 rupees at the rate of 12% per annum simple interest and B borrows 910 rupees at rate of 10% per annum simple interest. In how many years will their amounts of debts be equal ? # Don't spam.​

Answer 1

answer=22yrs

Step-by-step explanation:

Let after t year amount will be equal.

According to the question,

800+  

100

800×12×t

​  

=910+  

100

910×10×t

​  

 

⇒800+96t=910+91t

⇒5t=110

∴t=22years

Hence, after 22 years the amount will be equal.

Answer 2

Answer:

$\huge\underline\bold {Answer:}$

Let the required time be x years. Then,

800 + 800 × 12/100 × x

= 910 + 910 × 10/100 × x

= (96x – 91x) = 110

=> 5x = 110

=> x = 110/5

=> x = 22

Therefore, in 22 years their amounts of debts will be equal.