Write a system of equations to describe the situation below, solve using substitution, and fill
in the blanks.
Amy works in the shipping department of a toy manufacturer. Toy cars weigh 3 kilograms
apiece and are shipped in a container that weighs 1 kilogram when empty. Toy trucks, which
weigh 1 kilogram apiece, are shipped in a container weighing 7 kilograms. When packed with
toys and ready for shipment, both kinds of containers have the same number of toys and the
same weight. What is the number of toys? What is the weight of each container?

Please I need help

Ican interpret and represent the remainder in division calculations sensibly for the context (eg if we wont to know how many 40 seat buses will be needed to transport 170 students for on excursion, we divide 170 by 40 and realise buses and another smaller vehicle to that we need 4 transport 10 more students) solve the following questions. show your work! 11) the zoo had 420 butterflies that needed to be transported to a new enclosure. the boxes that the butterflies would be moved in only hold 80 butterflies in each. how many boxes would they need? 2 12) each classroom in the school can have exactly 25 students, if there are 345 students in the school how many full classrooms are there?