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Question:

Assume the exchange rate between the Trotter (TRT) and the Roeckl (RKL) is 5.50 TRT/RKL and the exchange rate between the Roeckl and the Passage (PSG) is 8.00 RKL/PSG. The cross rate between the PSG and the TRT is closest to:

A 0.0227 PSG/TRT.
Explaination

The TRT/PSG cross rate is 5.5 x 8.0 = 44 TRT/PSG. Because the answer choices are quoted as PSG/TRT, we need to invert this result: 1 / 44 = 0.0227 PSG/TRT.