4 motorcycles, tricycle 1 car, car 1 car.
(2) Grade four students take part in making paper flowers. Forty-two students made 104 flowers, two boys and three girls. How many boys and girls are there?
42x2=84 (flowers)
104-84=20 (flowers)
Female: 20/(3-2)=20 (person)
Male: 42-20=22 (person)