Andy’s total bill for lunch is $20. The cost of the drink is 15% of the total bill and the rest is the cost of the food. What percent of the total bill did Andy’s food cost and what were the cost of his food
The cost of the drink is 15% of the total bill, which means it is 0.15 * $20 = $3.
The cost of the food is the remaining amount after subtracting the cost of the drink from the total bill, so it is $20 - $3 = $17.
Therefore, the cost of Andy's food was $17 and it made up 85% of the total bill ($17 is 85% of $20).