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:Let us consider after t year amount is equal.

Consider an equation.

800+800×12×t100=910+910×10×t100

⇒ 800 + 96t = 910 + 91t

⇒ 5t = 110

⇒ t = 22 years

∴ After 22 years the amount will be equal.

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Step-by-step explanation:

Answer 2

Answer:

let after x years amount will be equal .

According to the question,

$800 + \frac{800 \times 12 \times x}{100}$

$= 910 + \frac{910 \times 10 \times x}{100}$

$800 + 96x = 900 + 91x$

$5x = 110$

$x = 22 \: \: years$