In france a loaf of bread costs 3 euros. in great britain a loaf of bread costs 4 pounds. if the exchange rate is .9 pounds per euro, what is the real exchange rate?
a. 3.6/3 loaves of british bread per loaf of french bread
b. 3/3.6 loaves of british bread per loaf of french bread
c. 2.7/4 loaves of british bread per loaf of french bread
d. 4/2.7 loaves of british bread per loaf of french bread

c. 2.7/4 loaves of British bread per loaf of French bread

Step-by-step explanation:

In France a loaf of bread costs 3 euros.

In Great Britain a loaf of bread costs 4 pounds.

The exchange rate is :

1 euro = 0.9 pounds

So, we can calculate the real exchange rate as:

3 euros =

Slo, answer is : 2.7/4 loaves of British bread per loaf of French bread.

(b) 240

step-by-step explanation:

first, we use the pythagorean formula using the given side lengths to find x. then we use x to find the side lengths. then we add the side lengths to find the perimeter.

pythagorean theorem formula:

a^2 + b^2 = c^2

(x - 20)^2 + (x - 40)^2 = x^2

x^2 - 40x + 400 + x^2 - 80x + 1600 = x^2

x^2 -120x + 2000 = 0

(x - 100)(x - 20) = 0

x - 100 = 0 or x - 20 = 0

x = 100 or x = 20

we see that the solution x = 20 must be discarded because it will give a negative side length and a side length of 0. the only valid solution is x = 100.

perimeter = sum of the lengths of the sides

perimeter = x + x - 20 + x - 40

perimeter = 3x - 60

replace x with 100.

perimeter = 3(100) - 60

perimeter = 300 - 60

perimeter = 240