In london a cup of tea costs 1 pound, a coffee costs $2 at starbucks in washington dc. at an exchange rate of $1.60/per pound, what is the price of a cup of british tea in terms of a cup of coffee?

The price of London's cup of  tea is 3.2 times the price of the Whasington cup of coffee.

Explanation:

To express the price of  cup of tea in terms of the cup of coffe we must to calculate the vaue of eachone in dollars or pounds. We will compute the cup of tea Ct in dollarsusing the change of 1.6 dollar per £:

Ct  =2£ * 1.6 $/£ =  3.2 $

Therefore by expressing the ratio the cup od tea to the cup of coffee:

Ct/Cc = 3.2$ / 1$ = 3.2  

The price cup of tea is 3.2 cups of tea.

the answer is a. $209,000