2/7 (4+c)=6 plz me i need to get it right

Eden has a part time job. she is paid ? 7.20 an hour the week she worked 18 and a half hours how much is she paid

In a small section of a stadium there are 40 spectators watching a game between the cook islands and fiji. they all support at least one of the two teams. 25 spectators support the cook islands and 16 of these support both teams. how many support only fiji?

If johnny ate 5 cans of sugar, but in the kitchen they only had 3. what did johnny eat? (he found a secret stash btw.)