Mark bought 8 boxes a wekk later half of all his boxes were destroyed in a fire there are now only 20 boxes left with how many did he start with show work

These question are hard can you me with answers

You eat 8 strawberries and your friend eats 12 strawberries from a bowl. there are 20 strawberries left. which equation and solution give the original number of strawberries?

Two lines parallel to the same plane are parallel to eachother