Question

a man bought 20 dozen notebooks at rupees 156 per dozen. he sold 8 dozens of them at 10%gaon and the remaining 12 dozens at 20% gain . what is the gain percent in the whole transaction​

Answer 1

Answer:

16%

Step-by-step explanation:

Solution:

Total notebooks = 20 dozen

1 dozen =156×20 =3120

He sold 8 dozen at 10% Profit+20 dozen at 20% Profit.

$= [125 \times 8 + \frac{125 \times 8 \times 10}{100} ] + [156 \times 12 + \frac{156 \times 12 \times 20}{100} ]$

$= 124 + \frac{1248}{10} + 1872 + \frac{3744}{10}$

$= \frac{3120 + 1248 + 3744}{10}$

$= 3619.20$

So the selling price =3619.2

Profit(%) = Selling price - Purchasing price.

= 3619.2-3120

=499.2

Profit(%) =

$\frac{499.2 \times 100}{3120}$

Hence, Profit =16%