Question

A dozen notebooks bought for Rs.800 are sold for Rs 75 each. find loss or profit.​

Answer 1

Answer:

bought a dozen at800

sol dozen at 900

hence profit

Mark it the brainliest

Answer 2

Given:-

• CP of 12 notebooks = Rs. 800
• SP of 1 notebook = 75

To find:-

Gain or loss percentage

Solution:-

$\sf{CP\: of\: 12\: notebooks = Rs. 800}$

$\sf{CP \:of \:1\: notebook = \dfrac{800}{12}}$

= $\sf{CP\:of\:1\:notebook = Rs.66.7}$

$\sf{SP\:of\:1\:notebook = Rs.75}$

Here we can see that SP > CP.

Hence, there is a gain.

$\sf{Gain = SP - CP}$

= $\sf{Gain = 75 - 66.7}$

= $\sf{Gain = Rs.8.3}$

Now,

$\sf{Gain\% = \dfrac{gain}{CP} \times 100}$

= $\sf{Gain\% = \dfrac{8.3}{66.7} \times 100}$

= $\sf{Gain\% = 12.44\%}$

Some important Formulas:-

• $\sf{Gain = SP - CP}$

• $\sf{Loss = CP - SP}$

• $\sf{Gain\% = \dfrac{Gain}{CP}\times 100}$

• $\sf{Loss\% = \dfrac{Loss}{CP}\times 100}$

• $\sf{CP = \dfrac{(100}{100+gain\%)}\times SP}$

• $\sf{CP = \dfrac{100}{(100-Loss\%)}\times SP}$

• $\sf{SP = \dfrac{(100+Gain\%)}{100}\times CP}$

• $\sf{SP = \dfrac{(100-loss\%)}{100}\times CP}$