Question

A dry fruit seller sells his fruits at 5% loss on the cost price because of an urgent need of money. But due to some technical error in his weighing machine, it measures 19g instead of 20g. What is his profit or loss percentage?​

Answer 1

Step-by-step explanation:

Correct answer is 40%

Profit earned on first to = 20%(110 x 12 +80 x 15) = 480

This is the loss of the third type, since he does not make any profit

∴ loss% =

60×20

480

×100=40%

I hope it helps you

Answer 2

Given,

The loss percentage on the cost price = 5%

The new weight measured due to an error in the weighing machine = $19g$

Actual weight to be measured by the weighing machine = $20g$

To Find,

The profit or loss percentage.

Solution,

The formula for calculation of profit in case of faulty weights = $(\frac{Error}{True weight-error} )100$

Where, the error =$True weight- false weight$

⇒$20-19 = 1g$

∴ The profit percentage can be calculated as follows:

⇒$\frac{1}{(20-1)}(100)$ (since true weight is 20 grams and error is 1 gram)

⇒$\frac{1}{19}(100)$

⇒5.2632%

Thus the profit percentage incurred by faulty weighing = 5.2632%

The loss incurred on cost price = 5%

Net profit = profit%-loss%

⇒5.2632% - 5%

⇒ 0.2632%

Hence, the net profit on the transaction is 0.2632%.