Question

A man buys notebooks at 12 for ₹78 and sells them at 5 for ₹30. Find his profit or loss percent. ​

Answer 1

Step-by-step explanation:

ANSWER

Consider the number of note books bought =20

Here the LCM of 4 and 5 is 20

C.P. of the notebooks =35/4×20

=35×5

=Rs.175

S.P. of the note books =58/5×20

=58×4

=Rs.232

(i) We know that

Gain=S.P.–C.P.

Substituting the values

=232–175

=Rs.57

Here

Gain%=[Gain/C.P.×100]%

Substituting the values

=[57/175×100]%

By further calculation

=[57/7×4] %

So we get

=228/7 %

=32

7

4

%

(ii) When the profit is Rs. 57, the number of note books sold = 20

When the profit is Rs. 1, the number of note books sold = 20/57

When the profit is Rs.171, the number of note books sold =20/57×171

=20×3

=60