Question

On a trip, you had to change your money from dollars to British pounds.

You got 560560 pounds for 800800 dollars.

Which is a unit rate that describes the exchange?

Answer 1

we can start with finding a function which give us British Pounds(P) from U.S. Dollars(d) after the exchange rate(x):

`P(d)=dx`

so now we plug in what we know, total British Pounds(560560) and US dollars(800800) and we get:

`560560=800800x`

We divide 560560 by 800800:

`x=0.7`

so the exchange rate is €0.70 for $1