Manuel traveled 3 hours nonstop to mexico, a total of 106 miles. he took a train part of the way, which averaged 40mph, and then took a bus the remaining distance, which averaged 30mph. how long was manuel on the train?

Grading scale 1 has the following weights- (tests- 50% quiz- 25% homework- 15% final exam- 10%). calculate your final average if your performance in the class is as follows-test grades- {88, 84, 90, 75, 70, 81); quiz grades- {88, 67, 90, 90, 45, 99, 76, 98, 100}; homework- 90; final exam- 75