I am not going to fully answer this but get you started instead. You want to calculate what 20% of $300 in canned vegetables is, that is the profit. Always think of multiplication when you hear "a percent OF". So you want to multiply 20% by $300 and that is the first piece. Remember to change your percent to decimal or fraction equivalent. I prefer in this case to use decimal so 20% is 0.20
Do that same calculation with each of the items and then total them up.
All the best,
Lori