PLZ ANSWER TvT Maria's Grocery store buys grapefruit at a cost of 5 for $1. They sell at a price of 5 for $3. How many must they sell to make a $10 profit.?

The question is kind of confusing. if it's asking how many variations of answers can you give. then do 4^5 for your answer.this would be something like the first question could be a and the 2nd c or first b next c etc. if you can, ask the teacher for a better confirmation of what it's asking. if i'm assuming correctly what it's asking, it's 625 different variations.