Help please and expalin if you can

Each side length of the hexagons is 1, what’s the area of abc

Ashipment of 18 cars, some weighing 3000lb a piece and th eothers 5000lb each, has a total weight of 30 tons. find the number of each kind of car.

There were 20 more apples in basket a than in basket b. mr. bell transferred 50 apples from basket b to basket a. there were 3 times as many apples in basket a as in basket b. how many apples were there altogether?