Qt 1. there are 20 children at a library. six of the children have an average age of 5 years. the remaining children have an average age of 8 years. what is the average age of the children at the library? enter your answer in the box. qt 2. at the karate school, class a has 8 students with an average age of 6 years. class b has 12 students with an average age of 9 years. the classes combine for a group workout. what is the average age of the combined classes? enter your answer as a decimal in the box. qt 3. on a test, the multiple choice portion makes up 80% of the final score and the essay portion makes up 20% of the final score. tanya scored an 86 on the multiple choice portion and a 93 on the essay portion of the test. what was tanya's test score? enter your answer as a decimal in the box. qt 4. at a tennis event, 10% of a player's score is based on serves, 40% on return balls, and 50% on wins. kyle makes 85% of his serves, returns 70% of the balls, and wins 75% of his games. what is kyle's score at the tennis event? enter your answer in the box. qt 5. a store gives away gift bags during a sale. of these gift bags, 50% are green, 20% are yellow, and 30% are blue. the average number of items in each green bag is 8. the average number of items in each yellow bag is 5. the average number of items in each blue bag is 8. what is the average number of items in all the gift bags? enter your answer as a decimal in the box. answer all show your work will mark brainliest