The ratio of the kids meal to the adults meal that were sold to a restaurant is 5 : 1. Where, 5 is the number of kids meal sold and 1 is the number of adult's meal sold. => given that there are 20 kiddie meal that were sold.Let's find the total number of adult's meal that were sold. Ratio : 5 : 1 = 20 : x , where x is the number of adult's meal that were sold in a restuarant, => firts, let's multiply the inner value of the proportion: => 20 * 1 = 20 => 20 / 5 = 4Thus the new ratio is 5 : 1 = 20 : 4