A small minibus carries 11 passengers and a large minibus carries 18 passengers. If thereare x small minibuses and y large minibuses, how many passengers can be carried in total?

A group of science students went on a field trip. They took 5 vans and 5 buses. There were 4 people in each van and 17 people in each bus. How many people went on the field trip?

There are 7 girls on a bus and each girl has 7 backpacks. In eachbackpack, there are 7 big cats. For every big cat, there are 7 kittenson the bus. How many legs are on the bus, not counting the driver?​

The adventure club went on a hike to see a waterfall. To get to the hike, the club members took 8 cars and 7 vans. There were 4 people in each car and 11 people in each van. How many people went on the hike?

In a class of 40 students, 17 have ridden an airplane, 28 have ridden a boat, 10 have ridden in a train, 12 have ridden both anairplane and a boat. 3 have ridden a train only and 4 have ridden an airplane only. Some students in the class have notridden any of the three models of transportation and equal numbers have taken all three.a. How many students have used all the three models of transportation?b. How many students have taken only the boat?

There are three boats B1, B2, and B3 working together they carry 60 people on each trip. One day an early morning B1 carried 50 people in a few trips alone. When it stopped carrying the passengers B2 and B3 started carrying the people together. It took a total of 10 trips to carry 300 people by B1, B2 and B3. It is known that each day on average 300 people cross the river using only one of the 3 boats B1, B2, and B3. How many trips it would take to B1 to carry passengers alone?