Question

a trader mixes two kinds of oil,one costing Rs.100 per kg. and the other costing 80 per kg. in the ratio 3:2 and sells the mixture at Rs.101.20 per kg. find his profit or loss percent.

Answer 1

answer and procedures is in attachment

Answer 2

Answer:

The profit is 10%

Step-by-step explanation:

Given : A trader mixes two kinds of oil, one costing Rs.100 per kg. and the other costing 80 per kg. in the ratio 3:2 and sells the mixture at Rs.101.20 per kg.

To find : His profit or loss percent.

Solution :

Ratio of mixture of oils = 3:2

Cost of 1st oil = Rs.100 per kg.

Cost of 2nd oil = Rs.80 per kg.

Cost price of mixture = $100\times 3+80\times2$

                                   = $300+160$

                                   = $460$

Therefore, The cost price of mixture is Rs.460 for 5 kg

$1 \text{ kg} =\frac{460}{5}=\text{Rs. }92$

As we have given, the mixture sells at Rs.101.20 per kg.

Selling price > Cost price

∴ It is a profit.

Profit = Selling price - Cost price

Profit = Rs. 101.20 - Rs .92

Profit = Rs. 9.20

$\text{Profit}\% = \frac{\text{Profit}}{C.P}\times 100$

$\text{Profit}\% = \frac{9.20}{92}\times 100$

$\text{Profit}\% = \frac{1}{10}\times 100$

$\text{Profit}\% = 10\%$

Therefore, The profit is 10%.