Bid Ask Price || How to trade cross rate in Spot Market || Explained with example by engrsayful

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· @engrsayful ·
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Bid Ask Price || How to trade cross rate in Spot Market || Explained with example
In my previous couple of posts, I have explained the bid ask and the basic issues related to bid ask spread and prices.  in today's post I want to straightforward explain bid and ask with a mathematical problem so that you can easily understand how these two things works. I shall try to solve this problem in two method.  this is part one of the post here I am going to explain a way to solve the problem like to understand the bid ask of any trading.  and in second post I shall try to explain the same things with Different techniques so that you can have both the ideas to solve such kind of problems.

![111.jpg](https://cdn.steemitimages.com/DQmPZcFzWFhgEZPXZ6DmHghYaxVf7N5g2rhJ2F2D3yZgcra/111.jpg)

For example, an importer from Bangladesh would like to import some product from China.  he need to pay 10,000 Yuan. The price available at his hand are following-
Tk/$ 85.51 / 86.90 and 
Yuan/$ 6.50 / 7.02
So let's calculate how much amount of Taka hi need to you spend to pay a the 1,000 Yuan?

_______
Let me explain the terms used in this problem first. Here, the important need to pay the cost of the imported goods in Chinese currency (Yuan). As he is in from Bangladesh, he has Bangladeshi taka at his hand. as there is no direct trading of Bangladeshi taka with Chinese currency then he needs to to go for Cross straight first to convert it into US dollar then into Chinese currency.

The price you can see from the problem is bid price and ask price.

**Keep in Mind
In Short, Bid = Bank’s buying rate or sellers selling rate
Ask = Bank’s selling rate or buyers buying rate
Bid in one currency is ask on another.**
__
First step, he gonna buy USD or Sell Tk, any any context you can think. Let’s think to buy $, so ask $

Tk needed to get USD = Spot (tk/ask $)
Here, its 86.90
___
Second Step, Now he is going to to sell this US dollar or in Reverse you can think he gonna Buy Yuan.let's consider buying Yuan.
So, Spot ($/ask Yuan)
___

Finally amount in Tk needed to buy 1000 Yuan = 10,000 Yuan * (Tk/ask $) * ($/ask Yuan)

Here, the rate for ($/ask Yuan) is not given in the problem. So, we need to apply the condition here `Bid in one currency is ask on another` here.

Now,
10,000 Yuan * (Tk/ask $) * {1/(Yuan/bid $)}
= 10000 Yuan * 86.90 tk/$ * (1/6.50 Yuan/$)
= 1,33,692.31 

**Tk Needed: 1,33,692.31 for paying 10,000 Yuan in Spot Market**
___

Finally, as I have done it with mathematical equation you need to careful about placing a bid price and ask price in the equation. in the problem the first prize is bid price and second price is ask price. Again, we know that ask price is greater than Bid price.
___
Another important thing anyone need to consider that is the unit should be eliminated otherwise you will not get a single unit.  in the second last line of the mathematical problem, you can see the dollar and Dollar are being eliminated because one is numerator and another one is denominator.
Similarly, for Yuan as well. So, we left Tk only that is 1,33,692.11.
___
I hope you have understood it better and still if you have any problem understanding the matter feel free to comment here.  thank you very much for stopping by
___
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created2021-04-08 00:56:33
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