Answer:
Call Fernie's time is F
We have: 75 × F = (ROUTE'S DISTANCE)
So: 45 × [F + (11 - 8)] = 45 × (F + 3) = (ROUTE'S DISTANCE)
so: 45 × (F + 3) = 75 × F
45F + 135 = 75F
30F = 135 so F = 4.5 (hours)
So Efrain's time = F + 3 = 4.5 + 3 = 7.5 (hours)
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