Vertical angels are always what to each other

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?

Credit card a offers an introductory apr of 3.4% for the first three months and standard apr of 15.7% thereafter,

The volume of a box varies directly with its length if a box in the group has a length of 30inches and k=24 what is its volume