Question

Помогитее)) вкладчик открыл в банке депозит. на сумму 10000 грн с некоторой фиксированной процентной ставкой. в конце первого года банк увеличил процентную ставку на 2% . после двух лет на счету было 11880 под какой процент был открыт депозит в банке?

Answer 1

Решение во вложениииииииииииииии

Answer 2

Депозит был открыт под (х%)
10000:100*х = 100*х ---доход в конце первого года
(10000+100х) ---остаток на депозите в конце первого года
(10000+100х):100*(х+2) ---доход в конце второго года
(10000+100х) + (10000+100х):100*(х+2) = 11880
100х + (100+х)*(х+2) = 1880
100х + 102х + x^2 = 1680
x^2 + 202x - 1680 = 0
D=202*202+4*1680 = 218^2
x = (-202+218)/2 = 16/2 = 8(%) ((отрицательный корень не имеет смысла))

Answer 3

Calculation of Deposit Interest Rate

To determine the interest rate at which the deposit was opened in the bank, we can use the information provided.

The deposit was opened with an initial amount of 10,000 грн and after two years, the account balance was 11,880 грн.

To calculate the interest rate, we can use the formula:

Interest = Principal * Rate * Time

Where: - Principal is the initial amount (10,000 грн) - Rate is the interest rate (unknown) - Time is the duration in years (2 years) - Interest is the difference between the final balance and the initial amount (11,880 грн - 10,000 грн = 1,880 грн)

Let's calculate the interest rate using this formula:

1,880 грн = 10,000 грн * Rate * 2

Simplifying the equation:

Rate = 1,880 грн / (10,000 грн * 2)

Calculating the rate:

Rate = 0.094

Therefore, the deposit was opened with an interest rate of 9.4%.

Please note that the provided search results did not contain specific information about the interest rate for the given scenario. The calculation above is based solely on the information provided.