There are 45 new houses being built in a neighborhood. last month, 1/3 of them were sold. this month, 1/5 of the remaining houses were sold. how many houses are left be sold?

45 new houseslast month 1/3 were sold
1/3(45) = 45/3 = 15 houses sold last month

this month, 1/5 of the remaining houses were sold...
remaining houses left are (45 - 15) = 30
1/5(30) = 30/5 = 6 houses sold this month

houses left : 45 - 15 - 6 = 45 - 21 = 24 houses remain <==

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