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This problem trains for: SAT-I, AMC-8, GMAT.

If p British pounds are equivalent to e euros and a euros are equivalent to p Mexican pesetas, how many British pounds are b pesetas worth?

Find how many Euros is one peseta worth:

EuroPeseta
ap
x1

equation

Similarly, find how many pounds is a euro worth:

PoundEuro
pe
y1

equation

How many pounds is a peseta worth?

equation

Then, b pesetas are worth:

equation

pounds.