If the rate of interest of a bank is increased from [tex]8\%[/tex] to [tex]10\%[/tex], find the increment percent.

(बैंकको ब्याजदर ८ प्रतिशतबाट बढाएर १० प्रतिशत पु¥याउने हो भने वृद्धि प्रतिशत लगाउनुहोस्)

a. [tex]2\%[/tex]
b. [tex]20\%[/tex]
c. [tex]25\%[/tex]
d. [tex]50\%[/tex]



Answer :

Certainly! Let's solve this step-by-step:

1. Identify the initial rate and the new rate:
The initial rate of interest is [tex]\(8 \%\)[/tex], and the new rate of interest is [tex]\(10 \%\)[/tex].

2. Calculate the absolute increase in rate:
The increase in the rate is calculated as:
[tex]\[ \text{Increment} = \text{New Rate} - \text{Initial Rate} = 10\% - 8\% = 2\% \][/tex]

3. Determine the increment percent:
We need to find out how much the increment of [tex]\(2 \%\)[/tex] represents compared to the initial rate of [tex]\(8 \%\)[/tex]. The formula to calculate the increment percent is:
[tex]\[ \text{Increment Percent} = \left( \frac{\text{Increment}}{\text{Initial Rate}} \right) \times 100 \][/tex]
Substituting the known values:
[tex]\[ \text{Increment Percent} = \left( \frac{2}{8} \right) \times 100 = 0.25 \times 100 = 25\% \][/tex]

So, the increment percent when the rate of interest increases from [tex]\(8 \%\)[/tex] to [tex]\(10 \%\)[/tex] is [tex]\(25 \%\)[/tex].

Thus, the correct answer is:

c. [tex]\(25 \%\)[/tex]