alleryStart learning →Train P runs at 60 km/h and train Q at 90 km/h over the same 180 km. How much sooner does Q arrive?
A1.5 h
B2 h
C30 min
D1 h
Answer & Solution
Correct answer: D. 1 h
P takes 3 h and Q takes 2 h for 180 km, so Q is 1 h ahead.
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