Manuel traveled 4 hours nonstop to Mexico a total of 153 mil

Manuel traveled 4 hours nonstop to Mexico, a total of 153 miles. He took a train part of the way, which averaged 60mph, and then took a bus the remaining distance, which averaged 30mph. How long was Manuel on the train? The time spent traveling on the train was hour(s). (Type an integer or a decimal.)

Solution

Let him spend \'t\' time on train. Hence, he travelled (4-t) by bus.

From the given data:

60(t) + 30(4-t) = 153

Therefore, 30t = 33

Hence, t = 1.1 hours