Question

In arm gym the membership fee is Rs 53 per month from this year, it was Rs 50. Per month last year. What is the percentage increase in membership fee?
A.3%
B.6%
C.6.5%
D.106%

Answer 1

Hint: In this question we have to find the percentage increase in membership fee. We have given last year's membership plan and this year membership plan .So apply the formula for percentage increase .
$ \Rightarrow Percentage Increase = \dfrac{{Membership\,Fee(this\, year) - Membership\,Fee(last\, year)}}{{Membership\,Fee\,(last\, year)}} \times 100$

Complete step-by-step answer:
First of all, let us see what is given to us. We have given the membership fee of this year and previous year.
$ \Rightarrow Membership\,Fee = Rs.53$ per month (This year)
$ \Rightarrow Membership\,Fee = Rs.50$ per month (last year)
We have to find a percentage increase in membership fee.
The formula for the percentage increase is given by

$ \Rightarrow Percentage Increase = \dfrac{{Membership\,Fee(this\, year) - Membership\,Fee(last\, year)}}{{Membership\,Fee\,(last\, year)}} \times 100$

Put the values in this equation, we get
$ \Rightarrow Percentage\, Increase = \dfrac{{53 - 50}}{{50}} \times 100$
$
   \Rightarrow Percentage\, Increase = \dfrac{3}{{50}} \times 100\% \\
   \Rightarrow Percentage\, Increase = 3 \times 2\% = 6\% \\
$
So, the correct option is B.

Note: - We can also solve it by short method. We gave last year and this year membership fee. Find the difference between these two and the difference is 3. How we can find the percentage increase in membership fee, we can do it by comparing it with last year's monthly fee. 3 is how much of 50, we can find it by dividing 3 by 50 and .06 comes. For percentage we will multiply it by 100 and $6\% $ comes. Also, we can find a percentage like this way i.e. 1 is $2\% $ of 50. So, 3 is $6\% $of 50.