Two buses are traveling to a state park. one bus leaves the terminal at 4: 00 p. m. and travels at 40 miles per hour. the second bus leaves the terminal at 5: 00 p. m. and travels at 60 miles per hour. how much time passes until the second bus catches up with the first bus?

Helll ! 1,400 tons of wheat of two different varieties was delivered to the silo. when processing one variety, there was 2% of waste and 3% during the processing of the second variety of wheat. after the processing, the amount of remaining wheat was 1,364 tons. how many tons of each variety of wheat was delivered to the silo?