How would you estimate the sum? just like estimate the fractions and then get your estimated answer? q: 2 1/6 + 3 6/11

I think estimation is terrible. If u want to truly solve it, you just need to get a common denominator on each of the fractions. that means the bottom half of both fractions must be the same in addition or subtraction. so here, the common denominator would be 66. What times 6 = 66? 11. So 1*11/6*11 = 11/66. Then what times 11 = 66? 6. So 6*6/6*11. Your new problem is 2 11/66 + 3 36/66. Now you can just add it up, but the denominators will always stay the same, 66. Your answer would be 5 47/66

10 will be the number of adult tickets and 11 will be the number of children tickets. i hope i could ! good luck : )