Question

draw a block diagram depicting the mobile system​

Answer 1

Answer:

The language/objective of question is not clear.

Profit and loss can be calculated on purchase price only.

Neither selling price nor purchase price is mentioned.

Supposedly if selling price is say 1500 Rupees. Now what is meaning of profit of one third of selling price?

Anyway one third of selling price will be 500 Rs. And item will be sold at 1000 Rupees.

Since seller is selling at profit one third of selling price so,

1000 - 500 =500 Rs can be purchase price.

In that case there is profit of 100%

Answer 2

Answer:

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Explanation:

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