Cross Over Rates - Using Algebraic Expressions to make the calculation easier.

I figured out that using algebraic expression to calculate cross over rate makes it easier.

For instance you want to calculate AUD:PKR and you have US:AUD and US:PKR the expression would be

AUD:PKR = AUD:US x US:PK

It can also be written as

AUD/PKR = AUD/US x US/PKR

We have been given with US:AUD and we require AUD:US so inverse that and then multiply it with US:PKR to get AUD:PKR

It becomes quite simple and easy to remember using the algebraic expressions. Easy to remember and easy to apply!