exam Maths Puzzle Numerical Ability

Please help me solve this prroblem:
A passenger train travels 392mi in the same time that it takes a freight train to travel 322mi. if the passenger train travels 20mi/h faster than the freight train, find the speed of each train

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Mr. Anders and Ms. Rich each drove home from a business meeting. Mr. Anders traveled east at 100 kilometers per hous and Ms. Rich traveled west at 80 kilometers per hour. In how A sample of 50 students was asked what type of pizza to order for a class party. 20 wanted sausage pizza. Based on the survey, predict how many students in a class of 450 would want sausage piiza.