Question

Reena Reena buys toffees at 10 for rupees 3 and sells them at 8 for $3. find her gain percent

Answer 1

Given :

The cost price of 3 toffees = $ 10

The selling price of 8 toffees = $3

To Find :

The gain percentage

Solution :

∵ The cost price of 10 toffees = Rs 3

∴ The cost price of 1 toffee = Rs $\dfrac{3}{10}$

Again

∵ The selling price of 8 toffees = Rs 3  

∴ The selling price of 1 toffee = Rs $\dfrac{3}{8}$

Since , Gain = Selling price - Cost price

So,       Gain = Rs $\dfrac{3}{8}$ -  Rs $\dfrac{3}{10}$

                    = Rs $\dfrac{30-24}{80}$

                    = Rs $\dfrac{3}{40}$

Now,

Gain % =  $\dfrac{Gain}{Cost Price}$ × 100

           = $\dfrac{\dfrac{3}{40} }{\dfrac{3}{10} }$ × 100

          = $\dfrac{1}{4}$ × 100

          = 25 %

Hence, The gain percentage of the whole transition is 25%   Answer

Answer 2

Answer:

hope it helps you

please mark my answer as brainlist