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If during a one-day period the Q train arrives at the station 30% less frequentl...
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If during a one-day period the Q train arrives at the station 30% less frequently than the B train, and the B train arrives 10% less frequently than the F train, then the Q train’s frequency is what percent of the F train’s frequency?
A.27
B.40
C.60
D.63
E.90
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