exam Maths Puzzle Numerical Ability

Ching leaves San Fransisco and travels toward Los Angeles at 50mi/h. An hour later, Phil leaves Los Angeles and travels toward San Fransisco at 60 mi/h. If the two cities are 380 miles apart, how many hours will it take for Ching to meet Phil?

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exam Other Question
The ratio of 1.2 to 1 is equal to which of the following ratios?

(A) 1 to 2
(B) 12 to 1
(C) 5 to 6
(D) 6 to 5
(E) 6 to 50 Simplify, log a x^a - log b a^x + c, as a single logarithm.